Question

Dadas as matrizes, calcule os valores de x e y para A = B.

Answer 1

1) x+5=-6

x=-6-5

x = -11

y-5=7

y=7+5

y = 12

2) $\left \{ {{x+y=2} \atop {3x-y=10}} \right.$

(3x-y)+(x+y)=10+2

3x-y+x+y=12

4x=12

x = $\frac{12}{4}$

x = 3

x+y=2

3+y=2

y=2-3

y = -1