Question

5x+7y=-3x+6
8+2x=6y-3

Answer 1

5x+7y=-3x+6 ==> 5x+3x + 7y = 6 ==> 8x + 7y = 68+2x=6y-3 ==> 2x - 6y = - 3 - 8 ==> 2x - 6y = - 11


8x + 7y = 6(6)
2x - 6y = - 11(7)

48x + 42y = 36
14x - 42y = - 77
    42x = - 41 ==> x =  - 41/42
7y = 6 - 8x ==> 7y = 6 - 8(- 41)  ==> 294y = 252 + 328
                                            42

294y = 580 ==> y = 580  
                                 294