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ziro4ka [17]
3 years ago
9

What is the value of x? A 5 B 2.5 C 7.5 D 10

Mathematics
2 answers:
aleksandrvk [35]3 years ago
6 0

Answer:

The answer is

A - 5

Step-by-step explanation:

RoseWind [281]3 years ago
3 0

Answer:

A 5

Step-by-step explanation:

Parts on the left have the same ratio as parts on the right.

... x/(x+5) = (x -2)/(x +1)

Multiplying by (x+5)(x+1), we get

... x(x +1) = (x -2)(x +5)

... x² +x = x² +3x -10 . . . . eliminate parentheses

... 0 = 2x -10 . . . . . . . . . . subtract x²+x

... 0 = x -5 . . . . . . . . . . . . divide by 2

... 5 = x . . . . . . . . . . . . . . . add 5

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