Question

3x+4y=5 and 4x_5Y=6 graf widhi

Answer 1

3x + 4y = 5 --. (1)
4x - 5y = 6. --. (2)

multiply eq1. with 4 and eq2 with 3
so,
12x + 16y = 20
12x - 15y = 18

subtract both we get
y = 2
putting this in eq 1
3x + 4×2 = 5
3x + 8 = 5
3x = -3
x = -1