Question

0.2x +0.3y=1.3;0.4x+0.5y=2.3 . give the pair pf linear equation

Answer 1

Multiply both equation with 10

Now the equations are

2x+3y=13 (eq 1)

4x+5y=23 (eq 2)

EQ 1 ×2= 4x+6y=26 (eq3)

eq3-eq2

y=3....

Put y=3 in EQ 1

2x+9=13

2x=13-9

2x=4

x=4/2=2

x=2......

Hence x=2 and y=3..