ta có:
(x .5 + 16) : 3 = 7
=> 5x + 16 = 21
=>5x = 5
=>x = 1
Trả lời :.........................
x = 1..............................
Hk tốt................................
Trả lời :..............................
x= 1 ..................................
Hk tốt.....................................
Theo đề ra ta có: x.5+16:3=7
x . 5 + 16 =7 . 3
x .5 =21-16
x = 5 : 5
x=1
..Trả lời :.............................\
x= 1..............................
Hk tốt...................................
..Trả lời :.............................\
x= 1..............................
Hk tốt...................................
..Trả lời :.............................\
x= 1..............................
Hk tốt...................................
..Trả lời :.............................\
x= 1..............................
Hk tốt...................................
..Trả lời :.............................\
x= 1..............................
Hk tốt...................................
..Trả lời :.............................\
x= 1..............................
Hk tốt...................................
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Trả lời :.............................
x = 1....................................
Hk tốt.......................................
Ta có (x.5 + 16) : 3 = 7
x.5 + 16 = 7.3
x.5 + 16 = 21
x.5 = 21 - 16
x.5 = 5
x = 5 : 5
x = 1
Ta có: \(\frac{5x+16}{3}=7\)\(\Rightarrow5x+16=21\)\(\Rightarrow5x=5\)\(\Rightarrow x=1\)
Vậy x = 1