2,3,4,15,12
简算 3×(1/12+2/15)+3/4
2(4x-3)+(15-2x)=24+12
2(4x-3)+(15-2x)=24+12
在1,2,3,4,10,12,15,60中,
(-5/12)×4/15×(-3/2)×(-6)
1*2*3+2*4*6+3*6*9+4*8*12+5*10*15分之1*3*5+2*6*10+3*9*15+4*12*2
(2*3+4*6+6*9+8*12+10*15)/(3*6+6*12+9*18+12*24+15*30)
1×3×5+2×6×10+3×9×15+4×12×20+5×15×25/1×2×3+2×4×6+3×6×9+4×8×12
(1)12^13(3^10*4^11) (2) (5^4*3^3-5^3*3^2+5^2*3)/15
2 | 3 | 4 | 15 | 12 3 | 4 | 5 | 28 | 20 4 | 5 | 6 | 45 | 30
2x+11/15=14/15 x-(2/3-1/4)=11/12
2x+11/15=14/15 x-(2/3-1/4)=11/12