Question

4x+2y=18
-9x+8y=-53 método de igualación

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Answer 1

Explicación:

despejar

4x+2y=18

4x=18-2y

x=18-2y/4

despejar:

-9x+8y=-53 //(-1)

9x=53+8y

x=53+8y/9

igualar

18-2y/4=53+8y/9

(18-2y)(9)=(53+8y)(4)

162-18y=212+32y

162-212=32y+18y

-50=50y

-50/50=y

|y=-1|

x=53+8y/9

x=53+8(-1)/9

|x=5|