Respuesta :

A. A= 4

b. b= 5.6

c. c=4

d. e= 3.2

1.) a=4

3a=12

Divide by 3 on each side

a=4

2.) b=5.6

b+3.3=8.9

 -3.3  -3.3

b=5.6

3.)c=4

1=1/4c

Multiply by 4 on each side

c=4

4.) e=3.2

2e=6.4

Divide by 2 on each side

e=3.2