23-01-2018
Mathematics

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i need help on how to do this

i need help on how to do this class=

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estherng0722 estherng0722

23-01-2018

x-2y=10 x+3y=5
x=10+2y--(1) x=5-3y--(2)

Equate (1) and (2) to find y,
10+2y=5-3y
3y+2y=5-10
5y=-5
y=-1

Substitute y=-1 into (1),
x=10+2(1)
= 12

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