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X + y = 18 10x + 5y = 110
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X + y = 18
10x + 5y = 110

X + y = 18 10x + 5y = 110-example-1
User AlexV
by
7.7k points

1 Answer

2 votes

Explanation:

x+y=18..............1

10x+5y=110.....2

therefore

x=18-y

in equation 2,

10(18-y)+5y=110

180-10y+5y=110

180-5y=110

-5y=110-180

-5y=-70

-5y÷-5=-70÷-5

y=14

User AleyRobotics
by
7.7k points
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