Can it be solved : -LSB- math -RSB- a + b = 8 ; c-d = 6 ; a + c = 13 ; b + d = 8 -LSB- / math -RSB- ?
Q2 . If 4x + 3y = 78 and 3x/2y = 27/22 . How much is y-x ? A -RRB- 17 b -RRB- 8 c -RRB- 6 d -RRB- 4 ?