3 years ago

Solve the System of Equations:-10x-3y=-18

Mathematics

1 answer:

AlladinOne [14]3 years ago

7 0

-10x - 3y = -18 (1)

-7x - 8y = 11 (2)

Multiply equation (1) by 8 and equation (2) by -3

-80x - 24y = -144 (1)

21x + 24y = -33 (2)

-------------------------------Add

-59x = -177

x = 3

Plug in x = 3 into -10x-3y=-18

-10(3) -3y =-18

-30 - 3y = -18

3y = -12

y = -4

Answer

(3, - 4)

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