Question

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Answer 1

VAMOS LÁ !!!

3)

28/20 = X/25

20X = 700

X = 700/20

X = 35

35/25 = Y/40

25Y = 1400

Y = 1400/25

Y = 56

4)

A)

10/25 = 12/X

10X = 300

X = 300/10

X = 30

B)

4/12 = 3/X

4X = 36

X = 36/4

X = 9

C)

4/3X+2 = 1/2

3X + 2 = 8

3X = 8 - 2

3X = 6

X = 6/3

X = 2

D)

2/4 = 4/X-1

2X - 2 = 8

2X = 8 + 2

2X = 10

X = 10/2

X = 5

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