50-42= 90+3= 45+55= 81-2= 73+15= 68-52= 68+15= 74-49= 49+30= 43-30= 45+17= 69-29= 43-27= 80-54= 91-25= 83+7= 20+75= 79-56= 79+8= 64-32= 99-29= 36+64= 59+37= 48-29= 19+56= 7+35= 4+54= 39-36= 33+55= 34+8= 68-9= 8+91= 35+46= 59-36= 57+15= 89-53= 34+13= 59-27= 94-34= 6+67=