Question

3x-2y=5, yx-y=5? solve

Answer 1

3x-2y=5-----(1 equation)
yx-y=5 (×2)
2yx-2y=10-----(2 equation)
subtract 2 equation from 1 equation, you will get:-
3x-2yx=-5
X(3-2y)=-5
x=-5 ÷ 3-2y
x=5÷2y-3-----(3 equation)
put 3 equation in 1 equation,
3{5÷2y-3}-2y=5
15÷2y-3=5-2y
15=5-2y(2y-3)
15= 10y-15-4y+6y
15=12y-15
30=12y
y=30÷12
y=2.5
Put y=2.5 in 3 equation
X=5÷2(2.5)-3
x= 5÷5-3
X=2.5