Basic Math Examples

$13 + 7 + n = 28$

Step 1

Add $13$ and $7$ .

$20 + n = 28$

Step 2

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

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Step 2.1

Subtract $20$ from both sides of the equation.

$n = 28 - 20$

Step 2.2

Subtract $20$ from $28$ .

$n = 8$