Tìm x: a,|x – 1/6| + -5/12 = 4/7.14/48 b,5/11.16/10 – | x + 1/3| = 5/22 05/12/2021 Bởi Bella Tìm x: a,|x – 1/6| + -5/12 = 4/7.14/48 b,5/11.16/10 – | x + 1/3| = 5/22
Đáp án: Giải thích các bước giải: a. |x-1/6| +(-5/12)=4/7.14/48 |x-1/6|+(-5/12)=4.14/7.48 |x-1/6|+(-5/12)=1.2/1.12 |x-1/6|+(-5/12)=2/12 |x-1/6|=2/12-(-5/12) |x-1/6|=2/12+5/12 |x-1/6|=7/12 => x-1/6=7/12 hoặc x-1/6=-7/12 *x-1/6=7/12 x=7/12+1/6 x=7/12+2/12 x=3/4 *x-1/6=-7/12 x=-7/12-1/6 x=-(7/12+2/12) x=-3/4 vậy x= -3/4 hoặc x= 3/4 b.5/11.16/10-|x+1/3|=5/22 16/10-|x+1/3|=5/22:5/11 16/10-|x+1/3|=5/22.11/5 16/10-|x+1/3|=5.11/22.5 16/10-|x+1/3|=1.1/2.5 16/10-|x+1/3|=1/10 |x+1/3|=16/10-1/10 |x+1/3|=3/2 =>x+1/3=3/2 hoặc x+1/3=-3/2 *x+1/3=15/10 x=3/2-1/3 x=9/6-2/6 x=7/6 *x+1/3=-3/2 x=-3/2-1/3 x=-(9/6-2/6) x=-7/6 vậy x=7/6 hoặc x= -7/6 CHÚC BẠN HỌC TỐT Bình luận
Đáp án: a. |x-1/6| +(-5/12)=4/7.14/48 |x-1/6|+(-5/12)=4.14/7.48 |x-1/6|+(-5/12)=1.2/1.12 |x-1/6|+(-5/12)=2/12 |x-1/6|=2/12-(-5/12) |x-1/6|=2/12+5/12 |x-1/6|=7/12 => x-1/6=7/12 hoặc x-1/6=-7/12 *x-1/6=7/12 x=7/12+1/6 x=7/12+2/12 x=3/4 *x-1/6=-7/12 x=-7/12-1/6 x=-(7/12+2/12) x=-3/4 vậy x= -3/4 hoặc x= 3/4 b.5/11.16/10-|x+1/3|=5/22 16/10-|x+1/3|=5/22:5/11 16/10-|x+1/3|=5/22.11/5 16/10-|x+1/3|=5.11/22.5 16/10-|x+1/3|=1.1/2.5 16/10-|x+1/3|=1/10 |x+1/3|=16/10-1/10 |x+1/3|=3/2 =>x+1/3=3/2 hoặc x+1/3=-3/2 *x+1/3=15/10 x=3/2-1/3 x=9/6-2/6 x=7/6 *x+1/3=-3/2 x=-3/2-1/3 x=-(9/6-2/6) x=-7/6 vậy x=7/6 hoặc x= -7/6 CHÚC BN HỌC TỐT Bình luận
Đáp án:
Giải thích các bước giải:
a. |x-1/6| +(-5/12)=4/7.14/48
|x-1/6|+(-5/12)=4.14/7.48
|x-1/6|+(-5/12)=1.2/1.12
|x-1/6|+(-5/12)=2/12
|x-1/6|=2/12-(-5/12)
|x-1/6|=2/12+5/12
|x-1/6|=7/12
=> x-1/6=7/12 hoặc x-1/6=-7/12
*x-1/6=7/12
x=7/12+1/6
x=7/12+2/12
x=3/4
*x-1/6=-7/12
x=-7/12-1/6
x=-(7/12+2/12)
x=-3/4
vậy x= -3/4 hoặc x= 3/4
b.5/11.16/10-|x+1/3|=5/22
16/10-|x+1/3|=5/22:5/11
16/10-|x+1/3|=5/22.11/5
16/10-|x+1/3|=5.11/22.5
16/10-|x+1/3|=1.1/2.5
16/10-|x+1/3|=1/10
|x+1/3|=16/10-1/10
|x+1/3|=3/2
=>x+1/3=3/2 hoặc x+1/3=-3/2
*x+1/3=15/10
x=3/2-1/3
x=9/6-2/6
x=7/6
*x+1/3=-3/2
x=-3/2-1/3
x=-(9/6-2/6)
x=-7/6
vậy x=7/6 hoặc x= -7/6
CHÚC BẠN HỌC TỐT
Đáp án:
a. |x-1/6| +(-5/12)=4/7.14/48
|x-1/6|+(-5/12)=4.14/7.48
|x-1/6|+(-5/12)=1.2/1.12
|x-1/6|+(-5/12)=2/12
|x-1/6|=2/12-(-5/12)
|x-1/6|=2/12+5/12
|x-1/6|=7/12
=> x-1/6=7/12 hoặc x-1/6=-7/12
*x-1/6=7/12
x=7/12+1/6
x=7/12+2/12
x=3/4
*x-1/6=-7/12
x=-7/12-1/6
x=-(7/12+2/12)
x=-3/4
vậy x= -3/4 hoặc x= 3/4
b.5/11.16/10-|x+1/3|=5/22
16/10-|x+1/3|=5/22:5/11
16/10-|x+1/3|=5/22.11/5
16/10-|x+1/3|=5.11/22.5
16/10-|x+1/3|=1.1/2.5
16/10-|x+1/3|=1/10
|x+1/3|=16/10-1/10
|x+1/3|=3/2
=>x+1/3=3/2 hoặc x+1/3=-3/2
*x+1/3=15/10
x=3/2-1/3
x=9/6-2/6
x=7/6
*x+1/3=-3/2
x=-3/2-1/3
x=-(9/6-2/6)
x=-7/6
vậy x=7/6 hoặc x= -7/6
CHÚC BN HỌC TỐT