Question

As part of a school contest, Sarah and Luis are playing a math game. Sarah must pick a number between 1 and 50 and give Luis clues so he can write an equation to find her number. Sarah says, "If i subtract 5 from my number, multiply that quantity 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 clues and what is is Sarah's number?

Answer 1

Simple, writing an equation,

(x-5)*4+7=35

multiply the 4 in

4x-20+7=35

4x-13=35

add 13 to the other side

4x-13=35
     +13  +13
4x=48

x=12.

The number is 12. But to check it, substitute the 12 into the equation.

(12-5)*4+7=35

(7)*4+7=35

28+7=35

35=35.

Thus, your answer is , the number is 12.

Answer 2

11 is the number because I subtracted 7 and 35 it was 28 then divided 28 and 4 which is 6 then added 6 and 5