Question

Solve
x + y = 100 x -y = 10
Pair of Equation

Answer 1

x + y = 100

x - y = 10

_____________ +

( x + y ) + ( x - y ) = 100 + 10

2x + y - y = 110

2x = 110

x = 110/2

x = 55

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x - y = 10

55 - y = 10

- y = 10 - 55

- y = - 45

y = 45

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x = 55 ..**&**.. y = 45