10x + 15

7x + 3

10x + 8

7x + 15

3x + 2

2x + 2

3x - 2

2x - 2

b = 1

b = -1

b = 3

b = -3

This equation is solved correctly.

The mistake was made on the second step of combining like terms on the right side.

The mistake was made on the third step of moving the variable to the left side.

The mistake was made on the fourth step of moving the constant to the right side.

The mistake was made on the first step doing the distributive property.

60

-3

15

3

Add 3 to both sides

Subtract 11 from both sides

Add 11 to both sides

Divide 3 on both sides.

subtract 10, divide by 7

divide by 7, subtract 10

multiply by 7, add 10

add 10, multiply by 7