Question

13. 3x + 2(x + 2) = 20 - (2x - 5) 14. solve and check​

Answer 1

Step-by-step explanation:

3x+2(x+2)=20-2x+5

3x+2x+4=25-2x

5x+4=25-2x

5x+2x=25-4

7x=21

x=3

checking:

LHS

3(3)+2(3+2)

9+2(5)

9+10

19

RHS

20-2(3)+5

20-6+5

20-1

19

LHS=RHS

Hence proved