Question

A student solved the equation 2x+2=10 using algebra tiles. She incorrectly says the solution is 6 . Solve the equation. What mistake might the student have​ made?

Answer 1

Explanation:

2x+2=10 subtract 2 from each side

2x=8 divide each side by 2

x=4 is the correct solution.

Her error was most likely subtracting 2 from the left and adding 2 to the right

2x+2=10

2x=12

x=6

Answer 2

she added 2 instead of subtracting it. the answer is x=4

Explanation:

10+2=12

12/2=6