Question

3.(x-1)+27=x-102

Answer 1

\(3\left(x-1\right)+21=x-102\)

\(\Rightarrow3x-3+21=x-102\)

\(\Rightarrow3x+18=x-102\)

\(\Rightarrow3x-x=-102-18\)

\(\Rightarrow2x=-120\)

\(\Rightarrow x=-60\)

Vậy x = -60

Answer 2

mk nhầm:

\(3\left(x-1\right)+27=x-102\)

\(\Rightarrow3x-3+27=x-102\)

\(\Rightarrow24=x-102-3x\)

\(\Rightarrow-2x=102+24\)

\(\Rightarrow-2x=126\)

\(\Rightarrow x=-65\)