Basic Math Examples

$0.8 a + 0.65 (40) = 0.4 (61)$

Step 1

Multiply $0.65$ by $40$ .

$0.8 a + 26 = 0.4 (61)$

Step 2

Multiply $0.4$ by $61$ .

$0.8 a + 26 = 24.4$

Step 3

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

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Step 3.1

Subtract $26$ from both sides of the equation.

$0.8 a = 24.4 - 26$

Step 3.2

Subtract $26$ from $24.4$ .

$0.8 a = - 1.6$

Step 4

Divide each term in $0.8 a = - 1.6$ by $0.8$ and simplify.

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Step 4.1

Divide each term in $0.8 a = - 1.6$ by $0.8$ .

$\frac{0.8 a}{0.8} = \frac{- 1.6}{0.8}$

Step 4.2

Simplify the left side.

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Step 4.2.1

Cancel the common factor of $0.8$ .

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Step 4.2.1.1

Cancel the common factor.

$\frac{0.8 a}{0.8} = \frac{- 1.6}{0.8}$

Step 4.2.1.2

Divide $a$ by $1$ .

$a = \frac{- 1.6}{0.8}$

Step 4.3

Simplify the right side.

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Step 4.3.1

Divide $- 1.6$ by $0.8$ .

$a = - 2$