Question

determine o valor de x e y​

Answer 1

Resposta:

a)

4y=12

y= 12/4

y=3

3x+2=20

3x=20-2

3x=18

x=18/3

x=6

b)

y-4=3

y=3+4

y=7

x-7=5

x=5+7

x=12