Write and solve an equation based on the following description: “11 less than three times a number is the same as 75 less than the product of -1 and the number”
Equation: 3n-11=-n-75 Solution: n= -16
A person weighs 120 lbs & is gaining 2 lbs a week. Another person weighs 155 lbs and is losing 1/2 lb each week. Write an equation that could be used to determine x, the number of weeks that it will take for them to weigh the same.
120 + 2x = 155 - 1/2x
A person could go to the gym and pay $12/day. A person could instead get a gym membership for $60 and pay $2/day that they go. Write and solve an equation to represent the amount of days this person would have to go the gym to make them =.
14x=60+2x. x=5
Which is the correct first step to solve the linear equation shown? 25 – 2.5x = 40
Subtract 25 from each side/get rid of the constant
Simplify: 42 = -4 + 8x + 12 + x
x=4
Simplify the expression. 10 + 8(2x – 7) + x
17x-46
Solve the equation: 34 = -2 + 9x + 16 + x
x=2
Simplify the expression. - 1/2(10x + 30) + 5
-5x-10
The perimeter of the rectangle below is 42 inches. Find the value of x.