Question

encontre os valores y dos pares abaixo que satisfazem a equação 3x+4y=36 b)(2,y). c)(4,y). d)(8,y). e)(12,y). f)(20,y)

Answer 1

B)3*2+4y=36
6+4y=36
4y=36-6
4y=30
y=30/4
y=7,5

C)3*4+4y=36
12+4y=36
4y=36-12
4y=24
y=24/4
y=6 

D)3*8+4y=36
24+4y=36
4y=36-24
4y=12
y=12/4
y=3 

E)3*12+4y=36
36+4y=36
4y=36-36
4y=0
y=0/4
y=0

F)3*20+4y=36
60+4y=36
4y=36-60
4y=-24 
y=-24/4
y=-6