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Solve.
 
40
 
30
 
50
 
26
Which equation should you write to solve this problem?
 
2x+8=40
 
16
 
2x-8=40
 
40-x=8
Which equation should you write to solve this problem?
 
4x+5=25
 
5x+4=25
 
4(5) + x = 25
Solve.
 
14
 
10
 
12
 
16
Solve.
 
23
 
25
 
21
 
22
Jona has pencils. Kris has three times as many. Together they have 24 pencils. Which is true?
 
Kris has 18 pencils
 
Krist has 12 pencils
 
Jona has 3 pencils.
 
Jona has 18 pencils.
Solve the equation.
 
-11
 
1
 
-12
 
36
Which are true about the process of solving equations?
 
Inverse operations are performed
 
The variable should be isolated.
 
The equation should stay balanced.
 
Addition is always used.
What is an equation?
 
Two expressions that are equal.
 
A numerical sentence
 
Variables with operations
 
An expression
What is the first step in solving this equation.
 
Multiplying by 6
 
Subtracting 5
 
Adding -1
 
Adding 1
Solve the equation.
 
-20
 
20
 
-4
 
-25
Solve the equation: -9x + 1= -80
 
9
 
-9
 
10
 
-11
Solve the equation.
 
16
 
0
 
22
 
4
Solve the equation: 9x - 7 = -7
 
0
 
1.6
 
-2
 
-1.6
What is the answer to the equation x + 2 = 6
 
4
 
3
 
8
 
12
What is the equation for the starting temperature of a temperature drop of 9°C to -3°C?
 
<i>x&nbsp;</i>- 9 = -3,&nbsp;<i>x</i> = 6
 
<i>x&nbsp;</i>+ 3&nbsp;= 9,&nbsp;<i>x</i> = 6
 
<i>x&nbsp;</i>- 3 = -9,&nbsp;<i>x</i> = -6
 
<i>x&nbsp;</i>+ 9 = 3,&nbsp;<i>x</i> = -6
Tiles are arranged on each side of the line to represent an equation. What is the equation?
 
<i>x - 2</i>&nbsp;= -1,&nbsp;<i>x = 1</i>
 
<i>2x</i> = 1,&nbsp;<i>x = 1</i>
 
<i>2x</i> = -1,&nbsp;<i>x = -1</i>
 
<i>x + 2</i>&nbsp;= 1,&nbsp;<i>x = -1</i>
Write an expression modelled by this picture.
 
2<i>x</i> - 3
 
2<i>x</i> + 3
 
2<i>x</i> - 6
 
2<i>x</i> + 9
Identify the tiles that model 2x + 4.
 
d
 
a
 
b
 
c
Solve this equation: -7 =&nbsp;x -2
 
-5
 
-9
 
5
 
9
A balance has 8g and 4g on the left, and 7g and an unknown ont he right. What is the unknown?
 
5 g
 
2 g
 
11 g
 
3 g
What is the mass needed to balance the masses on this 2-pan balance?
 
11 g
 
10 g
 
6 g
 
16 g
The 2 pans of the scales are balanced. Find the value for the unknown mass B.
 
13 g
 
5 g
 
11 g
 
47 g
The 2 pans of the scales are balanced. Find the value for the unknown mass A.
 
3 g
 
47 g
 
11 g
 
5 g
What is the equation and solution&nbsp;for: "Five more than a number is 15"?
 
<i>x</i> + 5 = 15, <i>x</i> = 10
 
5<i>x</i> = 15,&nbsp;<i>x</i> = 10
 
5<i>x</i> = 15,&nbsp;<i>x</i> = 3
 
<i>x</i> + 5 = 15, <i>x</i> = 3
Tim has $90 and spends&nbsp;$12.00 each week. Which equation calculates his spending over 3 weeks?
 
A = 90 - 3 × 12
 
A = (3 × 90) / 12
 
A = 90 - 3 + 12
 
A = 90 / (3 × 12)
Tim saved $12.00 from his allowance, half of what he received. What was his total allowance?
 
$24.00
 
$26.00
 
$12.00
 
$21.50
Find the value of x that makes this equation true. &nbsp; 2x + 6 = 14
 
4
 
10
 
20
 
7
Solve this equation: &nbsp;&nbsp;q ÷ 6 = 6
 
36
 
38
 
12
 
42
Solve this equation: &nbsp;&nbsp;x + 3 = 9
 
6
 
3
 
12
 
5
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