What is the answer to |7x+3|=18 ?

The answer to |7x+3|=18 is x=-3\lor x= 15/7

Solve for x: |7x+3|=18

The solution is x=-3\lor x= 15/7

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∣ 7 x + 3 ∣ = 18

x = - 3 or x = \frac{15}{7}

Decimal

x = - 3, x = 2.14285 \dots

Solution steps

∣ 7 x + 3 ∣ = 18

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

7 x + 3 = - 18 or 7 x + 3 = 18

7 x + 3 = - 18 or 7 x + 3 = 18

x = - 3 or x = \frac{15}{7}

y, 5 y - 5 = 2 ∣ x ∣

∣ 2 x + 1 ∣ + ∣ 2 x - 1 ∣ = 3

13 = ∣ 2 b + 12 ∣

∣ 2 k + 5 ∣ = 2 k^{2} + 2^{2}

∣ - 2 x - 6 ∣ = 2