Question

59pontos, pfvr

Resolva a equação 3x + 4y = 12 , sabendo que:

a) x = 2
b) y = -3
c) x = 0
d) y = 0​

Answer 1

Resposta:

a) 3.2+4y=12

4y=6

y=6/4

y=1.5

b)3x+4.(-3)=12

3x-12=12

x=0

c)4y=12

y=3

d)3x=12

x=4