littleo305 littleo305

26-04-2017
Mathematics

contestada

what is the value of x
2x+3y=45
x+y=10

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slippy2714 slippy2714

26-04-2017

Assuming this is a system of equations, here is how to find x.

2x + 3y = 45
x + y = 10

Multiply x + y = 10 by 2 so you are able to use the elimination method.

2x + 3y = 45
2x + 2y = 20

Subtract.

y = 25

Now that we've found y, we can plug it in to find x.

x + 25 = 10

Subtract 25 from both sides.

x = -15

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