Question

verify by substitution method
1) the root of 3×-5=7 is x=4
2) the root of 3+2x = 9 is x =3
3 ) the root of 5x-8= 2x-2 is x=2​​

Answer 1

Answer:

1)3x-5=7

3x=7+5

3x=12

x=12/3

x=4

2)2x+3=9

2x=9-3

2x=6

x=6/2

x=3

3)5x-8=2x-2

5x-2x=8-2

3x=6

x=6/3

x=2