Question

Determine x, y, z e t sabendo que:
(x) (3) (10)
a) (y) + (-1) = (-4)
(z) (5) (5)

(x) (y) (20)
b) (y) + (z) = (15)
(z) (4) (9)


(x y) (x 3) (10 -1)
c) (3 2z) + (t z) = (4 18)

Answer 1

Oi

x + 3 = 10
x = 7

y - 1 = -4
y = -3

z + 5 = 5
z = 0

z + 4 = 9
z = 5

y + 5 = 15
y = 10

x + 10 = 20
x = 10

2x + 10
x = 5

y + 3 = -1
y = -4

3 + t = 4
t = 1

3z = 18
z = 6