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asambeis [7]
3 years ago
12

What is 8c + 10b ÷ 7a if c = 7, b = 12, and a = 5 Please give a full and good explanation for a brainliest...​

Mathematics
2 answers:
PolarNik [594]3 years ago
8 0

Answer:

141  5/7

Step-by-step explanation:

8c + 10b ÷ 7a

Let c = 7, b = 12, and a = 5

8*7 + 10*12 ÷ 7*5

Multiply and divide from left to right

56+120 ÷7*5

56+ 600/7

Get a common denominator

392/7 + 600/7

992/7

Change from an improper fraction to a mixed number

141  5/7

Lisa [10]3 years ago
6 0

Answer:

    416                    3

=  --------    or   59 ----

       7                     7

Step-by-step explanation:

8c + 10b ÷ 7a

if c = 7, b = 12, and a = 5

plug in values:

= 8(7) + 10(12) ÷ 7(5)

= 56 + 120 / 35

= 56 + 24/7 ---- convert into factions

  56 * 7      24

=  --------  + ------

        7         7

sine the denominator are equal, combine the fraction

    56 * 7 + 24

=  -----------------

             7

    416                    3

=  --------    or   59 ----

       7                     7

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