Question

Solve, and check by substitution if your answer is correct. 2x - 9=11

Answer 1

x=11+9/2
x=20/2=10
2*10-9=11
20-9=11
11=11

Answer 2

2x-9=11
2x=11+9
2x=20
x=20/2
x=10

hope this helps u.....!