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anzhelika [568]
3 years ago
13

Marta tried solve the system below, but she made a mistake. Read carefully and try to figure out what her mistake was.

Mathematics
2 answers:
Marrrta [24]3 years ago
8 0
She put the y in the same equation ....it was the mistake
She had to put the y in the other equation:
2x+ 22 - 10x = - 2
-8x + 22 = - 2
-8x= -2 - 22
-8x= - 24
x= 3
Mumz [18]3 years ago
5 0

Answer:

Marta solved for y in the first equation and then substituted it back into that equation instead of the other one!

Step-by-step explanation:

edge 2020/2021

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