What is the answer to |20-9m|=7 ?

The answer to |20-9m|=7 is m= 13/9 \lor m=3

Solve for m: |20-9m|=7

The solution is m= 13/9 \lor m=3

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∣ 20 - 9 m ∣ = 7

m = \frac{13}{9} or m = 3

Decimal Notation

m = 1.44444 \dots, m = 3

Solution steps

∣ 20 - 9 m ∣ = 7

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

20 - 9 m = - 7 or 20 - 9 m = 7

20 - 9 m = - 7 or 20 - 9 m = 7

m = \frac{13}{9} or m = 3

- 12 = ∣ d + 6 ∣

2 ∣ q ∣ = 6

3 ∣ w - (10 - w) ∣ = 7 (w + 1)

∣ - 2 n ∣ + 30 = - 30

9 + 9 ∣ 8 x + 1 ∣ = 18