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What inverse operation should be used to isolate the variable in the equation 10 × b = 90?

What inverse operation should be used to isolate the variable in the equation 10 × b = 90?
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What inverse operation should be used to isolate the variable in the equation 10 × b = 90?

asked
User Mark Andersen
by
8.2k points

1 Answer

4 votes

Division

10 x b = 90

is the same as

b x 10 = 90

divide both sides by 10

b x 10 ÷ 10 = b

90 ÷ 10 = 9

so

b = 9

answered
User Martin Zeltin
by
8.7k points
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