Maria solved a math homework problem incorrectly. Given 7(3x + 4 + x) - 4x + 8
Step 1: 7(4x + 4) - 4x + 8
Step 2: 28x + 4- 4x + 8
Step 3: 28x - 4x + 4 + 8
Step 4: 24x + 12
Between which two steps is Maria's first mistake seen?
Given and Step 1
Step 1 and Step 2
Step 2 and Step 3
Step 3 and Step 4

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

(x-5)1/2+5=2 what is possible solution of this equation

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14