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3 years ago

Solve the system of equations 5x + y = 5 10x + 3y = 20

Mathematics

2 answers:

alina1380 [7]3 years ago

6 0

Y = 10

x = -1

u might need to check it again
just to make sure

just olya [345]3 years ago

4 0

5x + y = 5.....multiply by -2
10x + 3y = 20
------------------
-10x - 2y = -10 (result of multiplying by -2)
10x + 3y = 20
-----------------add
y = 10

5x + y = 5
5x + 10 = 5
5x = 5 - 10
5x = -5
x = -5/5
x = -1

solution is (-1,10)

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