Question

[Jiyoen Phạm]

a, (3-1/4+2/3)-(5+1/3-6/5)-(6-7/4+3/2)

b, 1/3-3/4+3/5+1/64-2/9-1/36+1/15

c, 0,5+1/3+0,4+5/7+1/6-4/35

d, 8/9-1/72-1/56-1/42-1/30-1/12-1/6-1/2

Tinh hop li

Nhanh nhe! Milk se tang 3 hinh anh than tuong bn muon.

Answer 1

[đỗ thị lan anh]

a)\(3-\left(\frac{1}{4}+\frac{2}{3}\right)-\left(5+\frac{1}{3}-\frac{6}{5}\right)-\left(6-\frac{7}{4}+\frac{3}{2}\right)\)

=\(3-\frac{1}{4}-\frac{2}{3}-5-\frac{1}{3}+\frac{6}{5}-6+\frac{7}{4}-\frac{3}{2}\)

=\(\left(3-5-6\right)+\left(\frac{-1}{4}+\frac{7}{4}\right)+\left(\frac{-2}{3}-\frac{1}{3}\right)+\left(\frac{6}{5}-\frac{3}{2}\right)\)

=\(-8+\frac{3}{2}-1-\frac{3}{10}\)

=\(\left(-8-1\right)+\left(\frac{3}{2}-\frac{3}{10}\right)\)

=-9+\(\frac{6}{5}\)

=\(\frac{-39}{5}\)