1.

The solution of the set of equations 3x +4y=7,4x-y=3 is

Answer»

Here 3X+4Y=7.........(1)

4x-y=3........(2)

eq(1) * 1 --- 3x +4y =7
.
eq(2) * 4--- 16X -4y =12

adding eq(1) with eq(2)

................................................................
19x=19

=>x=19/19=1 ........

from eq(1) 3x + 4y=7

=>3*1 + 4y=7

=>4y = 7-3=4

=> y= 4/4=1 ..........



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