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Solve each proportion. Show your work. a . 2x/7 = 12/14 b. 3/x-1 = 5/7

Solve each proportion. Show your work. a . 2x/7 = 12/14 b. 3/x-1 = 5/7
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Solve each proportion. Show your work.

a . 2x/7 = 12/14

b. 3/x-1 = 5/7

User Andrey Godyaev
by
8.2k points

1 Answer

2 votes
2x / 7 = 12 / 14

Start by cross multiplying

28x = 84

Divide both sides by 28

x = 3

b) 3 / x - 1 = 5 / 7

Start by cross multiplying

21 = 5x - 5

Flip the equation

5x - 5 = 21
+5 +5

5x = 26

x = 26/5

User Courtney Pattison
by
8.5k points
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