2 years ago

(7×25)+(7×12) in a shorter way

Mathematics

1 answer:

Galina-37 [17]2 years ago

7 0

Answer:

Th answer is 175 + 84 =259

Step-by-step explanation:

follow the PEMDAS procedure multiply in the parentheses then add your 2 answers

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Each large box weighs 15 kilograms and each small box weighs 13.5 kilograms.

Step-by-step explanation:

Let,

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Weight of small box = y

According to given statement;

5x+2y=102 Eqn 1

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$4(5x+2y=102)\\20x+8y=408\ \ \ Eqn\ 3$

Subtracting Eqn 2 from Eqn 3

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Dividing both sides by 17

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Putting x=15 in Eqn 2

$15(3)+8y=153\\45+8y=153\\8y=153-45\\8y=108$

Dividing both sides by 8

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Each large box weighs 15 kilograms and each small box weighs 13.5 kilograms.

Keywords: linear equation, elimination method

Learn more about elimination method at:

#LearnwithBrainly

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3 years ago

(7×25)+(7×12) in a shorter way​

(7×25)+(7×12) in a shorter way