Question

Bài 2.Tìm x

d,43-(24-x)=20

e,20-(x+14)=5

f,15:(x-3)=3

Answer 1

Bài 2:

d, 43-(24-x)=20

<=>43-24+x=20

<=>19+x=20

<=>x=20-19=1

Vậy x=1

e, 20-(x+14)=5

<=> 20-x-14=5

<=>6-x=5

<=>x=6-5=1

Vậy x=1

f,15:(x-3)=3

<=> x-3=15:3=5

<=>x=5+3

<=>x=8

Vậy x=8

Answer 2

\(d,43-\left(24-x\right)=20\)

\(24-x=23\)

\(x=1\)

\(e,20-\left(x+14\right)=5\)

\(x+14=15\)

\(x=1\)

\(f,15:\left(x-3\right)=3\)

\(x-3=5\)

\(x=8\)

Answer 3

x= 8 nhé

Answer 4

\(d,43-\left(24-x\right)=20\)

\(\Rightarrow\left(24-x\right)=43-20\)

\(\Rightarrow\left(24-x\right)=23\)

\(\Rightarrow x=24-23\)

\(\Rightarrow x=1\)

\(e,20-\left(x+14\right)=5\)

\(\Rightarrow\left(x+14\right)=20-5\)

\(\Rightarrow\left(x+14\right)=15\)

\(\Rightarrow x=15-14\)

\(\Rightarrow x=1\)

\(f,15:\left(x-3\right)=3\)

\(\Rightarrow\left(x-3\right)=15:3\)

\(\Rightarrow\left(x-3\right)=5\)

\(\Rightarrow x=5+3\)

\(\Rightarrow x=8\)