Question

Bài 2.Tìm x

a,(x-2018) .3=0

b,25(x-8)=0

c,25+(15+x)=75

Answer 1

a) \(\left(x-2018\right)\cdot3=0\)

\(\Leftrightarrow x-2018=0\)

\(\Leftrightarrow x=2018\)

b) \(25\left(x-8\right)=0\)

\(\Leftrightarrow x-8=0\)

\(\Leftrightarrow x=8\)

c) \(25+\left(15+x\right)=75\)

\(\Leftrightarrow15+x=50\)

\(\Leftrightarrow x=35\)

Answer 2

a) x=2018

b)x=8

c)x=35

Answer 3

Bài 2:

a, (x-2018).3=0

<=> x-2018=0

<=>x=0+2018

<=>x=2018

Vậy x=2018

b, 25(x-8)=0

<=> x-8=0

<=> x=0+8

<=>x=8

Vậy x=8

c, 25+(15+x)=75

<=> 25+15+x=75

<=> 40+x=75

<=>x=75-40

<=>x=35

Vậy x=35