Question

Solving the pair of linear equation by substitution method question is 0.2 X + 0.3 Y is equals to 1.3 and 0.4 X + 0.5 is equals to 2.3

Answer 1

Step-by-step explanation:

0.2 X + 0.3 Y=1.3

0.4 X + 0.5 Y=2.3

0.2 X + 0.3 Y+0.2X+0.2Y=2.3

1.3+0.2(X+Y)=2.3

0.2(X+Y)=1

X+Y=5

X=5-Y

0.2 X + 0.3 Y=1.3

0.2(5-Y)+0.3Y=1.3

1-0.2Y+0.3Y=1.3

0.1Y=0.3

Y=3

X=5-Y

X=5-3

X=2

X=2 Y=3