1.a) x – 215 = 124 b) 516 + x = 516 c) x : 314 = 5 d) 267.x = 267 e) 25x + 75x = 100 30/07/2021 Bởi Hadley 1.a) x – 215 = 124 b) 516 + x = 516 c) x : 314 = 5 d) 267.x = 267 e) 25x + 75x = 100
a) `x – 215 = 124` `x = 124+215` `x=339` b) `516 + x = 516` `x = 516-516` `x=0`c) `x : 314 = 5` `x = 5 × 314` `x = 1570` d) `267.x = 267` `x = 267:267` `x = 1`e) `25x + 75x = 100` `(25+75)x=100` `100x=100` `x=100:100` `x=1` Bình luận
Đáp án: a) x – 215 = 124 x = 124 + 215 x = 339 Vậy x = 339 b) 516 + x = 516 x = 516 – 516 x = 0 Vậy x = 0 c) x : 314 = 5 x = 5 x 314 x = 1570 Vậy x = 1570 d) 267.x = 267 x = 267 : 267 x = 1 Vậy x = 1 e) 25x + 75x = 100 100 x = 100 x = 100 : 100 x = 1 Vậy x = 1 XIN HAY NHẤT Bình luận
a) `x – 215 = 124`
`x = 124+215`
`x=339`
b) `516 + x = 516`
`x = 516-516`
`x=0`
c) `x : 314 = 5`
`x = 5 × 314`
`x = 1570`
d) `267.x = 267`
`x = 267:267`
`x = 1`
e) `25x + 75x = 100`
`(25+75)x=100`
`100x=100`
`x=100:100`
`x=1`
Đáp án:
a) x – 215 = 124
x = 124 + 215
x = 339
Vậy x = 339
b) 516 + x = 516
x = 516 – 516
x = 0
Vậy x = 0
c) x : 314 = 5
x = 5 x 314
x = 1570
Vậy x = 1570
d) 267.x = 267
x = 267 : 267
x = 1
Vậy x = 1
e) 25x + 75x = 100
100 x = 100
x = 100 : 100
x = 1
Vậy x = 1
XIN HAY NHẤT