Question

Lin and Noah are solving the equation 7(x + 2) = 91

Lin starts by using the distributive property. Noah starts by dividing each side by 7.

In your workbook show what both Lin's and Noah's full solution methods should look like.
Who took fewer steps to solve the problem?

Answer 1

lin: 7x+14=91, 91-14=7x, 77=7x, divide each side by 7, x=11
noah: x+2=91/7, x+2=13, subtract 2 from both sides, x=11