Question

3x+y=24 and -3x+5y=-6 Working out please!

Answer 1

3x+y=24------(a)
-3x+5y=-6----(b)
adding both equations
u get 6y=18 => y=3

so x= (24-y)/3 ....from eq (a)
x=(24-3)/3=21/7=3

therefore x=y=3

Answer 2

equation (a) + equation (b) gives

3x+y=24------(a) -3x+5y=-6----(b)
___________________
0 + 6y = 24 - 6
6y = 18
y= 18/6
y=3

put this y in equation (a) to solve for x

3x+3 = 24
3x = 21
x=21/3 = 7

so x=7; y=3