计算
28+59= 74+7= 16-8= 74-36=
45+50+2= 61+11= 92+1= 62+23=
15+59= 65-19= 1-0+75= 73+21=
91+4= 43-22= 47-19= 44-44=
17+70-58= 57-9= 45-37= 48-9=
98-37= 98-27-68= 65-16= 56-47=
83-73= 39+51= 42-25= 76+22+0=
46-19= 46+36= 7+21= 18+42=
36+24= 15+67-76= 26-18= 73-32=
57+38= 41+54= 45+16= 76+16-16=
29+46= 37-14= 2+95= 35-17=
94-91= 1+36+5= 12+3= 75-26=
54-13= 58-56= 38+60= 71-7+35=
56-42= 50+38= 28-9= 74+21=