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Digiron [165]
4 years ago
5

Solve 2x+10y=-20 and -x+4y=28 by elimination

Mathematics
1 answer:
mrs_skeptik [129]4 years ago
5 0
Multiply -x+4y=28 by 2
-2x+8y=56
add to first equation
2x+10y=-20
<u>-2x+8y=56  +
</u>0x+18y=36

18y=36
divid 18
y=2
subsitute
-x+4y=28
-x+4(2)=28
-x+8=28
subtract 8
-x=20
multipy -1
x=-20



x=-20
y=2

(x,y)
(-20,2)

<u />
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Answer:

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Step-by-step explanation:

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