Pre-Algebra Examples

$70 = 19 - 3 x$

Step 1

Rewrite the equation as $19 - 3 x = 70$ .

$19 - 3 x = 70$

Step 2

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

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Step 2.1

Subtract $19$ from both sides of the equation.

$- 3 x = 70 - 19$

Step 2.2

Subtract $19$ from $70$ .

$- 3 x = 51$

Step 3

Divide each term in $- 3 x = 51$ by $- 3$ and simplify.

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Step 3.1

Divide each term in $- 3 x = 51$ by $- 3$ .

$\frac{- 3 x}{- 3} = \frac{51}{- 3}$

Step 3.2

Simplify the left side.

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Step 3.2.1

Cancel the common factor of $- 3$ .

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Step 3.2.1.1

Cancel the common factor.

$\frac{- 3 x}{- 3} = \frac{51}{- 3}$

Step 3.2.1.2

Divide $x$ by $1$ .

$x = \frac{51}{- 3}$

Step 3.3

Simplify the right side.

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Step 3.3.1

Divide $51$ by $- 3$ .

$x = - 17$