Question

Marcy made an error when solving the equation below.

8m−20=36
8m−20+20=36
8m=36
8m÷8=36÷8
m=4 4/8
m=4 1/2
Identify Marcy's error and use one or more number properties to explain why it resulted in an incorrect solution.​

Answer 1

marcy added 20 instead of equating that -20

8m-20=36

8m=36+20

8m÷8=56÷8

m=7