What is the answer to |2x-7|=15 ?

The answer to |2x-7|=15 is x=-4\lor x=11

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|2x-7|=15

∣ 2 x - 7 ∣ = 15

x = - 4 or x = 11

Solution steps

∣ 2 x - 7 ∣ = 15

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

2 x - 7 = - 15 or 2 x - 7 = 15

2 x - 7 = - 15 or 2 x - 7 = 15

x = - 4 or x = 11

\frac{a + 3}{a ^{2} - 1} + \frac{a - 1}{2 a + 2} + \frac{a - 4}{4 a - 4}

f (m) = \frac{2 m ^{6} + 6 m}{3 m ^{14} + 12 m ^{9} + 9 m ^{4}}

10 (1 + 0.4)^{5}

ln (x - 1) < 1

- 16 x^{2} + 49 = 0