Question

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Answer 1

Resposta:

$a=6, \;b=3,\;c=-4\;\;e\;\;d=-2$

Explicação passo-a-passo:

Comparando as duas matrizes, termo a termo, temos:

$2b=6\\\\b=\frac{6}{2} \\\\b=3$

$a+b=9\\\\a+3=9\;\;pois \;\;b=3\\\\a=9-3\\\\a=6$

$b+c=-1\\\\3+c=-1\\\\c=-1-3\\\\c=-4$

$2a-3d=18\;\;\; onde \;\;\;a=6\\\\2\cdot 6-3d=18\\\\12-3d=18\\\\-3d=18-12\\\\-3d=6\;\;\;\;\;\;(-1)\\\\3d=-6\\\\d=\frac{-6}{3} \\\\d=-2$

Resposta: $a=6, \;b=3,\;c=-4\;\;e\;\;d=-2$

Answer 2

2b=6

b=6/2

b=3

a+b=9

a+3=9

a=9-3

a=6

b+c=--1

3+c= - 1

c= -1 - 3

c= -4

2.6- 3d= 18

12-3d= 18

-3d = 18 - 12

- 3d= 6

d= 6/-3

d= - 2

a= 6 b=3 c= -4 d= -2