Question

solve 3x+y=15,2x-y=5​

Answer 1

Step-by-step explanation:

The first equation=

3x+y=15

=y=15-3x

Put the value of y in second equation.

The second equation is=

2x-y=5

=2x-(15-3x)=5

=2x-15+3x=5

=5x-15=5

=5x=5+15

=5x=20

=x=20/5=4

Now,put the value of X in the value of y

Y=15-3x=15-3*4=15-12=3

Hence,x=4 and y=3