Question

tìm xa.(x+ 7/4) x2/3 = 6b. x : 5 /3 + 2/5 = 9/ 5c .1/ 2 : 3 + x = 5 /3d .x +4 /5=4 /5+ (3/ 7+3 /5)e. 5/ 7+x/ 35=4 /5f .1313/2828+ x =2323/ 4646g .23/ 69- x =17/ 153

Answer 1

a: =>x+7/4=6:2/3=9

=>x=29/4

b: =>x:5/3=7/5

=>x=7/5*5/3=7/3

c:=>x+1/6=5/3

=>x=10/6-1/6=3/2

d: =>x+4/5=4/5+3/7+3/5

=>x=3/7+3/5=36/35

e: =>x/35=4/5-5/7=3/35

=>x=3

f: =>13/28+x=1/2

=>x=1/28

g: =>1/3-x=1/9

=>x=2/9