Question

Solve for ‘x’:-
a. 2x + 5 = 45
b. 3x + 8 = x – 23

Answer 1

2x+5=45 2x=45-5 x=40/2=20 3x+8=x-23 3x-x=-23-8 2x=-31 x=-31/2=-15.5

Answer 2

a)2x+5=45
⇒2x=45-5
⇒2x=40
⇒x=40/2
∴x=20.
b)3x+8=x-23
⇒3x-x=-23-8
⇒2x=-31
∴x=-31/2.