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Precalculus Examples

1 < x - 2 < 7

$1 < x - 2 < 7$

Step 1

Add

2

$2$ to each section of the inequality because it does not contain the variable we are trying to solve for.

1 + 2 < x < 7 + 2

$1 + 2 < x < 7 + 2$

Step 2

Add

1

$1$ and

2

$2$ .

3 < x < 7 + 2

$3 < x < 7 + 2$

Step 3

Add

7

$7$ and

2

$2$ .

3 < x < 9

$3 < x < 9$

Step 4

The result can be shown in multiple forms.

Inequality Form:

3 < x < 9

$3 < x < 9$

Interval Notation:

(3, 9)

$(3, 9)$

Step 5

Enter YOUR Problem

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[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$