Question

Determine x,y e z de modo que se tenha :

[4 2×+10] = [4 -8]
[3y 3z-5 ] [-3 1]

Answer 1

1)4=4

2) 2x+10=-8
2x=-8-10
2x=-18
x=-18÷2
x=-9

3) 3y=-3
y=-3÷3
y=-1


4) 3z-5=1
3z=1+5
3z=6
z=6÷3
z=2

portanto, x=-9, y=-1 e z=2.