|x-10|<10

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`x`²	`x`^□	log_□	√☐	^□√☐	≤	≥	□□	·	÷	`x`^◦	π
(☐)^′	`ddx`	∂∂`x`	∫	∫_□^□	lim	∑	∞	`θ`	(`f` ◦ `g`)	`f`(`x`)

☐²

x^☐

√☐

^□√☐

□□

log_□

θ

∞

∫

ddx

≥	≤	·	÷	`x`^◦	(☐)	\|☐\|	(`f` ◦ `g`)	`f`(`x`)	ln	`e`^☐
(☐)^′	∂∂`x`	∫_□^□	lim	∑	sin	cos	tan	cot	csc	sec

simplify solve for inverse tangent line

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3|y−9|<27

Solution

0<y<18

Interval Notation

(0, 18)

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Solution steps

One step at a time

3|y−9|<27

Divide both sides by 3

|y−9|<9

Apply absolute rule: If |u| < a, a>0 then −a < u < a

−9<y−9<9

y−9>−9 and y−9<9

y>0 and y<18

Merge Overlapping Intervals

0<y<18

Number Line

0<y<18

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Notebook

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−▭▭	<	7	8	9	÷	`AC`
+▭▭	>	4	5	6	×	☐☐☐
×▭▭	(	1	2	3	−	`x`
▭ \|▭	)	.	0	=	+	`y`

|x-10|<10

Solution

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