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sergeinik [125]
3 years ago
7

How can multiplication be used to check your division equation answer?

Mathematics
1 answer:
Zolol [24]3 years ago
4 0
Multiplication and division are opposites and can be used to undo each other. 
For example, 
4/2=2
But if you take the quotient and multiply it by the divisor
2x2=4
you get the original dividend
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Solve for x. 1.1x + 1.2x - 5.4 = -10
Andru [333]

Answer:

x ≈  - 1.83

Step-by-step explanation:

to solve for x in the question 1.1x + 1.2x - 5.4 = -10

we have

2.3x - 5.4 = -10

collect the like terms

2.3x = -10 + 5.4

2.3x = -4.2

divide both sides by the coefficient of x

2.3x/2.3 = -4.2/2.3

x = -1.826

x ≈  - 1.83

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Step-by-step explanation:

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