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What is 13x+4y=487 + -12x-4y=-464 pls show your work

What is 13x+4y=487 + -12x-4y=-464 pls show your work
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8 votes
What is 13x+4y=487 + -12x-4y=-464 pls show your work

User Qfinder
by
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1 Answer

10 votes
13x+4y=487 ------ (1)
6x+2y=232 ------ (2)
Multiply equation 2 by two,
12x+4y=464 ----- (3)
Minus equation 1 by equation 3,
x = 23
Now solve for y,
6(23) + 2y = 232
138 + 2y = 232
2y = 94
y = 47

Hope this helped ;).
User Marco Gallella
by
8.2k points
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