Question

28. Solve:- a) 5(X+3) =20 b)
(2+1)/3=(z-1)/2​

Answer 1

Step-by-step explanation:

a)5x+15=20

5x=20-15

5x=5

x=5

b)2+1/3=z-1/2

2(2+1)=3(z-1)

4+2=3z-3

6=3z-3

6+3=3z

9/3=z

z=3