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13-01-2021
Mathematics

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Y=-5x+30 7x+3y=42 1111

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13-01-2021

Step-by-step explanation:

7x+3y=42.

y=-5x+30.

7x+3(-5x+30)=42

7x-15x+90=42

8x=42-90

-8x=-48

x=-48/-8

x=6

y=-5x+30

y=-5×6+30

=-30+30

y=0

(6,0)

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