Solve for x 3x+1+5x=7+15+7x

$3 x + 1 + 5 x = 7 + 15 + 7 x$

Step 1

Add $3 x$ and $5 x$ .

$8 x + 1 = 7 + 15 + 7 x$

Step 2

Add $7$ and $15$ .

$8 x + 1 = 22 + 7 x$

Step 3

Move all terms containing $x$ to the left side of the equation.

Subtract $7 x$ from both sides of the equation.

$8 x + 1 - 7 x = 22$

Subtract $7 x$ from $8 x$ .

$x + 1 = 22$

Step 4

Move all terms not containing $x$ to the right side of the equation.

Subtract $1$ from both sides of the equation.

$x = 22 - 1$

Subtract $1$ from $22$ .

$x = 21$