Question

solve the following pair of linear: equation
3x-5Y = 4
2y+7=9x​

Answer 1

3x-5y=4.....(1)

2y+7=9x.....(2)

By substitution method,

x=4+5y/3.....(3)

by substituting eq. 3 on eq. 2

2y+7=9(4+5y/3)

2y+7/9=4+5y/3

6y+21=36+45y

y=-39/5.....(4)

By substituting 4 on 1

3x-5(-39/15)=4

45x=-135

x=-3

HOPE IT HELPS.......