Question

Solve the following system of equation

x+y=109
2x+y=173

show all your working out!

Answer 1

Explanation:

x+y=109................................ (1)

2x+y=173...............................(2)

(2)-(1)

(2x-x)+(y-y)=(173-109)

x+0=64

x=64

putting x into (1)

64+y=109

y=109-64

y=45

therefore y=45 and x=64

Answer 2

Given
X+y=109
2x+y=173