3 years ago

X=-4 –7x + 5y = 13 what is Y?

Mathematics

2 answers:

Ray Of Light [21]3 years ago

7 0

-7x + 5y = 13
-7(-4) + 5y = 13
28 + 5y = 13
5y = 13 - 28
5y = -15
y = -15/5
y = -3

Darina [25.2K]3 years ago

7 0

Answer:

Step-by-step explanation:

This is how you will do:

-7x(-7x-4)+5y=13

=28+5y=13

Pass 13to the other side across the mark , that will change the sign to make it negative (28-13=5y)

15=5y divide all sides by 5 to leave the answer as 3=y

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