4 years ago

Two-thirds of a number added to itself is 20. What is the number?

Mathematics

1 answer:

vivado [14]4 years ago

8 0

Answer:

Step-by-step explanation:

2/3 x + x = 20

2/3 x + 3/3x = 20

5/3 x = 20 ... times 3/5 both sides

x = 12

check: 2/3 x 12 + 12 = 8 + 12 = 20

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