Question

elimination 4x+2y=20. 4x+8y=-30​

Answer 1

Step-by-step explanation:

4x+2y=20...1

4x+8y=-30...2

Subtracting equation 2 by 1 .

4x+8y=-30

4x+2y=20

-________

6y=-50

y=-50/6

y=-8.3

Substituting value of y=-8.3 in equation 1.

4x+2(-8.3)=20

4x+(-16.6)=20

4x-16.6=20

4x=20+16.6

4x=36.6

x=36.6/4

x=9.15

The solution of this equation is x=9.15, y=-8.3.

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