Question

solve the following pair of linear equations by the substitution method
1. x + y = 14
x - y = 4​

Answer 1

Answer:

X=9

Y=5

X+Y=14

X-Y=4

X=14 -Y

so we put this valye in X-Y=4

(14-Y)-Y=4

14-Y-Y=4

2Y=14-4

2Y=10

Y=10/2

Y=5

We put value of Y in X+Y=14

X+5=14

X=14-5

X=9