Question

Bài tìm x 

a) x + 4/5 = 3/2                 b) x - 3/2 = 11/4                   c) 25/3 - x = 5/6

Bài tính

a) 3/14 + 5/8 - 1/2                           b) 1/2 - 1/3 + 1/4 + 1/6

Answer 1

a.x+4/5=3/2

x= 3/2 -4/5

x= 7/10

b.x-3/2=11/4

x=11/4+3/2

x=17/4

c.25/3-x=5/6

x=25/3-5/6

x=15/2

Answer 2

típ nà

Answer 3

a) \(\frac{3}{14}+\frac{5}{8}-\frac{1}{2}=\frac{3\times4+5\times7-1\times28}{56}=\frac{12+35-28}{56}=\frac{19}{56}\)

b)\(\frac{1}{2}-\frac{1}{3}+\frac{1}{4}+\frac{1}{6}=\frac{6\times1-1\times4+1\times3+1\times2}{12}=\frac{6-4+3+2}{12}=\frac{7}{12}\)

T I C K nha cảm ơn

Answer 4

bn là giáo viên ak