Question

solve for x and y 2x=5y+4 , 3x-2y+16=0

Answer 1

Given,

2x=5y+4

2x-5y=4                              ....(i)

3x-2y+16=0

-3x+2y=16                          ......(ii)_

Multiplying (i) by 3 and (ii) by 2, we get

6x-15y=12    .....(iii)

-6x+4y=32    ......(iv)

Adding (iii) and (iv) we get

11y=44

y=4

Substituting the value of y in (i) we get

2x-5y=4

2x-5×4=4

2x-20=4

2x=24

x=12

Hence, x = 12, y = 4