13-4÷2,3×(52-48),4×(25-19),(100-90)×2,12÷(20-16),36÷(44-40),3+3×2,5×3+3,4×5+9,(2+0)×4,6×3-6,7×4-8

13-4/2,3*(52-48)=13-1,74*4=45,044*(25-19)=4*6=24(100-90)*2,12/(20-16)=10*2,12/4=21,4/4=5,3536/(44-40)=36/4=93+3*2,5*3+3,4*5+9=3+7,5*3+17+9=3+22,5+17+9=51,5(2+0)*4,6*3-6,7*4-8=2*13,8-26,8-8=27,6-26,8-8=- 7,2