Question

solve for x and y
5x-4y=43
2x+3y=8
explain plz.

Answer 1

you can sum the two equations, term by term, obtaining
7x-y=51
y=7x-51
and substitute y in one of them e.g. the second one
2x+21x-153=8
Then you solve for x
23x=161
x=7
and substitute it in the other (the first)
35-4y=43
y=-8/4
y=2

Answer 2

and how r the equations summed? hm???

Answer 3

term by term
in our case:
5x-4y +2x+3y = 43 +8

Answer 4

You can also subtract one from another.
You always get a true equation