Question

Solve for x: the quantity of x plus 20 over 2 = 3x

x = 10
x = 4
x = −14
x = −17
Any help please??

Answer 1

x=4

Answer 2

\[ \frac{x+20}{2} = 3 \]

let me teach you how it is done but with another problem

\[ \frac{x+35}{5} = 4
\\ 5\times (\frac{x+35}{5}) = 4 \times 5
\\ 1 \times (x+35) = 20
\\ x+35 = 20
x + 35 -35 = 20 - 35
\\x = -15
\]

Answer 3

\[
\color {red} 5 \times (\frac{x+35}{\color{red} 5}) = 4 \times \color{red} 5
\\
x+35 = 20
\\
x + 35 \color {red} {- 35} = 20 \color {red} {-35}
\\
\sf \large \color {blue} {x = -15}
\]