Algebra Examples

27 - 9

$27 - 9$

Step 1

Subtract using long subtraction.

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Step 1.1

Set up the subtraction problem in long subtraction format.


	$2$ $2$	$7$ $7$
$-$ $-$		$9$ $9$

Step 1.2

Borrow

10

$10$ from the digit in the next column to the left. Add the borrowed

10

$10$ to

7

$7$ . Reduce the number that was borrowed from by

1

$1$ .

	$1$ $1$	$17$ $17$
	$2$	$7$
$-$		$9$

Step 1.3

Subtract

$9$ from

$17$ .

	$1$	$17$
	$2$	$7$
$-$		$9$
		$8$

Step 1.4

Subtract

$0$ from

$1$ .

	$1$	$17$
	$2$	$7$
$-$		$9$
	$1$	$8$

	$1$	$17$
	$2$	$7$
$-$		$9$
	$1$	$8$

Step 2

The result of

$27 - 9$ is

$18$ .

$18$

$27 - 9$

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