Let the two number be x and y. x+y=-1......i 2x+4y=-10.....ii solving the simultaneous equation we have: from equation i, making x the subject we get: x=-1-y........iii substituting iii in ii we get: 2(-1-y)+4y=-10 -2-2y+4y=-10 2y=-10+2 2y=-8 y=-8/2=-4 substituting the value of y in iii we get: x=-1-(-4) x=-1+4 x=3 therefore the first number is 3 and the second number is -4
