Simple calculation 3 × (1 / 12 + 2 / 15) + 3 / 4

Simple calculation 3 × (1 / 12 + 2 / 15) + 3 / 4

3×(1/12+2/15)+3/4
=3x1/12+3x2/15+3/4
=1/4+2/5+3/4
=1/4+3/4+2/5
=1+0.4
=1.4

Simple calculation. 15 / 16 △ 5 / 8 + 3 / 8

15/16÷（5/12÷5/8+3/8）
=15/16÷（2/3+3/8）
=15/16÷（16/24+9/24）
=15/16÷25/24
=15/16×24/25
=9/10

The simple calculation is (3) 11 / 12 × 5 / 7 + 11 / 12 × 2 / 7 (4) 7 / 8 × 15 + 7 / 8
（3）11/12×5/7+11/12×2/7
（4）7/8×15+7/8

(3) 11/12x5/7+11/12x2/7
=11/12x(5/7+2/7)
=11/12
（4）7/8x15+7/8
=7/8x（1+15）
=7/8x16
=14

2 / 5 + 5 / 6 + 5 / 7 + 7 / 10 + 8 / 15 + 10 / 20 + 12 / 35

2/5+5/6+5/7+7/10+8/15+10/20+12/35
=2/5+1/2+1/3+5/7+1/5+1/2+1/3+1/5+1/2+1/7+1/5
=(2/5+1/5+1/5+1/5)+(1/3+1/3)+(1/2+1/2+1/2)+(1/7+5/7)
=1+2/3+3/2+6/7