4 years ago

Determine if the expressions are equivalent. 12. 7+7x;7(x+1/7) 13. 2.5(3+x); 2.5+7.5

Mathematics

1 answer:

Marrrta [24]4 years ago

8 0

12 is not because the second terms would be 7x + 1 and not 7x + 7.

and 13 is not equivalent either

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Let the number of nickels be = n

Let the number of dimes be = d

Let the number of quarter be = q

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And 20 more dimes than nickels

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As total money is $12.80

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Putting the values of 'q' and 'd' to find 'n'

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If you want to also find dime and quarter, then

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