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Popular >

15<3x+5<21

Solution

15 < 3 x + 5 < 21

Solution

\frac{10}{3} < x < \frac{16}{3}

+2

Interval Notation

(\frac{10}{3}, \frac{16}{3})

Decimal Notation

3.33333 \dots < x < 5.33333 \dots

Solution steps

15 < 3 x + 5 < 21

If

a < u < b

then

a < u and u < b

15 < 3 x + 5 and 3 x + 5 < 21

15 < 3 x + 5 : x > \frac{10}{3}

3 x + 5 < 21 : x < \frac{16}{3}

Combine the intervals

x > \frac{10}{3} and x < \frac{16}{3}

Merge Overlapping Intervals

\frac{10}{3} < x < \frac{16}{3}

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\frac{1}{( x - a ) ^{3}} - \frac{1}{( x + a ) ^{3}}

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8^{3} - 9 \cdot 2 \div 3

Frequently Asked Questions (FAQ)

What is 15<3x+5<21 ?
The solution to 15<3x+5<21 is 10/3 <x< 16/3