Question

2. 10x + 7 = 3x - 21
Checking​

Answer 1

Answer:

1. 10 X + 7 =-21-7. 10x-3x=-21-7. 7x = -14 x=-14/7. x=-7

Answer 2

Step-by-step explanation:

10 x +7 = 3x -21

10x - 3x = -21 - 7

7x = - 28

x =- 4

checking

L.H.S

10 x + 7

10 (-4) +7

=-40 + 7

= - 33

RHS

3x - 21

= 3(-4) - 21

= -12 -21

= -33

LHS = RHS

verified ✔