As part of a school contest, Sarah and Luis are playing a math game. Sarah must pick a number between 1 and 50 and Luis clues so he can write an equation to find her number. Sarah says, " if I subtract 5 from my number, multiply that equality by 4, and then add 7 to the result, I get 35." What equation can Luis write based on Sarah's clues and what is Sarah's number?

Question

11 November, 11:05

+3

Answers (1)

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Destiny Fletcher · Answer 1

If x is Sarahs number then

(x-5) * 4+7=35

subtract 7 from both sides

4 (x-5) = 28

divide by 4 on both sides

x-5=7

add 5 to both sides

x=12