Mark needs to travel 42km. He can ride his bike 7km each day. Write the algebraic expression to represent this problem.
7 x d = 42
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25
Ashley bought 21 apples and separated them into 3 bags. She wonders how many apples are in each bag. Write the expression that represents this problem.
3 x a=21
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15
Solve the equation 3y-5 if y equals 3.
4
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25
25=b/4
100
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20
Solve this inequality. 10x > 120
12
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lifesaver
Give 15 points!
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rocket
Go to first place!
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gift
Win 15 points!
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lifesaver
Give 20 points!
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15
Solve 27-m=13
14
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15
What is a variable?
A variable is a symbol that represents a mathematical object.
