ballerboy2171 ballerboy2171

11-09-2020
Mathematics

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B is between A and C. If AB = 7x - 2, BC = 3x + 1 and AC = 59, Find AB

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unicorn3125 unicorn3125

12-09-2020

Answer:

AB = 40

Step-by-step explanation:

B is between A and C so:

AB + BC = AC

7x - 2 + 3x + 1 = 59

10x - 1 = 59

+1 +1

10x = 60

÷10 ÷10

x = 6

AB = 7x - 2 = 7×6 - 2 = 42 - 2 = 40

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