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12 votes
Are 2(6.1x+25.3y+2.1x-3.9y) and 4(4.1x+ 10.7) equivalent

User Fibono
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1 Answer

17 votes
17 votes

Answer:

Multiply the number outside the parentheses by each term inside the parentheses

=2(6.1x+25.3y+2.1x-3.9y)

=(2*6.1x)+(2*25.3y)+(2*2.1x)+(2*-3.9y)

=12.2x + 50.6y + 4.2x - 7.8y

combine like terms

= 16.4x + 42.8y

=4(4.1x+ 10.7)

=(4*4.1x) + (4*10.7y)

=16.4x + 42.8y

Yes, the two expressions are equivalent.

Explanation:

User Alessandro Suglia
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