Question

A+18=7
what does a equal

Answer 1

Hello.

Rewrite the equation as 7−x=187-x=18.7−x=187-x=18
−x=11-x=11Multiply each term in −x=11-x=11 by −1-1
Answer= x=−11

Have a nice day

Answer 2

a+18=7

Subtract both sides by 18
By the subtraction property of equality, a= -11