2x - 3y = 9; 2x + y = 13
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Step-by-step explanation:
2x - 3y = 9..........1
2x + y = 13..........2
Subtract eqn 2 from 1
2x - 3y =9
-(2x + y = 13)
___________
0 - 4y = -4
y = -4/-4
y = 1
Substitute the value of y in eqn. 2
2x + y = 13
2x + 1 = 13
2x = 13 - 1
2x = 12
x = 6
y = 1
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