Question

Substitution method class 10 2x+3y=13 and x+2y=8

Answer 1

SUBSTITUTION METHOD

2x + 3y = 13 _(i)

x + 2y = 8. _(ii)

From eq.(i)

2x + 3y = 13

2x = 13 - 3y

x = 13 - 3y /2.

Put the value of x in eq. ii

x + 2y = 8

$\frac{13 - 3y}{2} + 2y = 8$

$\frac{13 - 3y + 4y}{2} = 8$

$13 + y = 16$

y = 3

Putting value of y in eq.i

2x + 9 = 13

2x = 4

x = 2. Answer