Question

please explain step by step​

Answer 1

Answer:

(a). a = 5

step by step explained :

(a). 3a + 7 = 22

Recorder the terms :

7 + 3a = 22

Solving for variable ' a'

Move all terms containing a to the lef

Add ' - 7 ' to each side of the equation

7 + -7 + 3a = 22 + - 7

combine like terms : 7 + - 7 = 0

0 + 3a = 22 + - 7

3a = 22 + - 7

combine like terms : 22 + - 7 = 15

3a = 15

divide each side by ' 3'

a = 5

Simplifying ;

a = 5