Question

2x + y = 7
5x + y = 9
Solve the system of equations. @Kemist can anybody help?

Answer 1

(0.667), (5,667)

https://www.desmos.com/calculator

Answer 2

hey @iGreen please dont tell them like that explain why

Answer 3

@stocksro https://www.desmos.com/calculator works out alot for your system of equations.

Answer 4

so first we start like this
\(2x + y = 7\)
\(5x + y = 9\)
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then we first make the first equation isolate y
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\(y=-2x+7\)
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then replace the 2nd equation with the first
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\(5x+1(-2+7)=9\)

Answer 5

then we get
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5x-2+7=9

Answer 6

now what we do is solve for x
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5x+5=9
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5x=4
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x=4/5