Question

Find the value of 2x - 5y= 63(1)
3x - 4y= 34(2)
by substitution method​

Answer 1

$2x - 5y = 63$

$3x - 4y = 34$

Mutiplying eq 1 with 3 we get,

$6x - 15y = 189$

Mutipkying eq 2 with 2 we get,

$6x - 12y = 68$

Now we subtract them both,

New equation formed eq3 and eq4

$- 27y = 121$

$y = \frac{ - 121}{27}$

Putting the vakuebof y in eq 1 we will calcukate the value of x

,,,,,

$2x - 5 \frac{121}{27} = 63$

$2x - 22.40 = 63$

$x = 42.7$

Hope it helped u ❤❣️✌️