Question

MATRIZES!
PRECISO DESSAS RESPOSTAS URGENTE...
SOU RUIM EM MATRIZES MAS SEI QUE A MAIORIA AQUI É CRAQUE NISSO, POR FAVOR ME AJUDEM...​

Answer 1

Explicação passo-a-passo:

Igualando os elementos aos seus correspondentes:

a)

$x+3=-5\\\\x=-5-3\\\\x=-8\\\\2y-7=13\\\\2y=13+7\\\\2y=20\\\\y=10$

b)

$x+3=10\\\\x=10-3\\\\x=7\\\\7-y=2\\\\-y=2-7\\\\-y=-5\\\\y=5$

c)

$x+2=15\\\\x=15-2\\\\x=13\\\\2y-1=5\\\\2y=5+1\\\\2y=6\\\\y=3$

d)

$2x=16\\\\x=8\\\\y+2=12\\\\y=12-2\\\\y=10$