Question

if2x+y=35 and 3x+4y=65 ind the value ofx

Answer 1

multiply eq1 by 4 and eq2 by 1


we get

8x+4y=140

3x+4y=65

on solving we get

x=15
y=5

in hope it will help u .......

Answer 2

2x+y =35 -------1equation

3x+4y =65.--------2equation


2x+y=35 ---1equation multiply by 4
3x+4y =65 ---2equation multiply by 1


8x+4y=140
3x+4y =65
- - -

5x = 75

x=75/5

x=15

Puttitig the value of x in 1equation,

2(15)+ y =35

30+y =35

y=35-30

y=5


_________________,,
I hope this will help you



-by ABHAY