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2 years ago

110,568÷220−568÷220 Calculate efficiently in your head.

Mathematics

2 answers:

julsineya [31]2 years ago

8 0

Answer:

500?

Step-by-step explanation:

AveGali [126]2 years ago

3 0

Answer:

500

Step-by-step explanation:

Mental calculation often makes use of factoring and cancelling of factors. To the greatest possible extent, multiplying or dividing by powers of 2, 5 and 10 are also used.

$\dfrac{110568}{220}-\dfrac{568}{220}=\dfrac{110568-568}{220}=\dfrac{110000}{220}\\\\=\dfrac{110}{220}\cdot1000=\dfrac{1}{2}\cdot1000=\boxed{500}$

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3 years ago

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mariarad [96]

Answer:

$4x + 42 = 3$

Step-by-step explanation:

Given:

$\frac{2}{3}x + 7 = \frac{1}{2}$

Required

Equivalent expression without fraction

To do this, we simply multiply through by a common multiple of the denominators in the expression.

The denominators are 2 and 3

$2 = 2,4,6,8,10,..$

$3 = 3,6,9,12..$

So, 6 is the least common multiple.

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Hence, an equivalent expression.

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2 years ago

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GrogVix [38]

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Step-by-step explanation:

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Step-by-step explanation:

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2 years ago

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