Question

4x - 3y = 17
5x + 4y = 60

Answer 1

take the first equation
4x-3y=17
solve for x or y...
I'll solve for X
4x=17+3y
x=17/4+3/4 *y
now substitute into the second equation...
5x+4y=60
5(17/4+3/4 *y)+4y=60
... go on

Answer 2

multiply both -3y and 4y with 4 and 3 respectively. Then cancel out.
You'll get 16x = 68
15x = 120
add them you'll get 31x = 188
x = 188/31
then insert the value of x into one of those eqns. and you'll get the answer of y.

Answer 3

sorry i meant 15x = 180
x gives 248/31 x = 8