Basic Math Examples

$55 = 2 a - 5 + a + 4 + a$

Step 1

Rewrite the equation as $2 a - 5 + a + 4 + a = 55$ .

$2 a - 5 + a + 4 + a = 55$

Step 2

Simplify $2 a - 5 + a + 4 + a$ .

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Step 2.1

Add $2 a$ and $a$ .

$3 a - 5 + 4 + a = 55$

Step 2.2

Add $3 a$ and $a$ .

$4 a - 5 + 4 = 55$

Step 2.3

Add $- 5$ and $4$ .

$4 a - 1 = 55$

Step 3

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

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Step 3.1

Add $1$ to both sides of the equation.

$4 a = 55 + 1$

Step 3.2

Add $55$ and $1$ .

$4 a = 56$

Step 4

Divide each term in $4 a = 56$ by $4$ and simplify.

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Step 4.1

Divide each term in $4 a = 56$ by $4$ .

$\frac{4 a}{4} = \frac{56}{4}$

Step 4.2

Simplify the left side.

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Step 4.2.1

Cancel the common factor of $4$ .

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Step 4.2.1.1

Cancel the common factor.

$\frac{4 a}{4} = \frac{56}{4}$

Step 4.2.1.2

Divide $a$ by $1$ .

$a = \frac{56}{4}$

Step 4.3

Simplify the right side.

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Step 4.3.1

Divide $56$ by $4$ .

$a = 14$