Question

tim x biet

18+ (-3+x) - (44-x)=55

8x - x=49

Answer 1

\(18+\left(-3+x\right)-\left(44-x\right)=55\)

\(\Rightarrow x=42.\)

\(8x-x=49\)

\(\Rightarrow x=7\)

Answer 2

8x-x=49

8x-1x=49

(8-1).x=49

7x=49

x=49:7=7

Answer 3

\(\Rightarrow18-3+x-44+x=55\)

\(\Rightarrow x+x=55-18+3+44\)

\(\Rightarrow2x=84\)

\(\Rightarrow x=42\)

Vậy \(x=42\)