3 years ago

How do I solve for 7y-4x=42 x=5y+9

Mathematics

1 answer:

8_murik_8 [283]3 years ago

8 0

Answer:

x=-21 y=-6

Step-by-step explanation:

7y-4(5y+9)=42

7y-20y-36=42

-13y=78

y=-6

x=5*(-6)+9

x=-30+9

x=-21

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