christopher766
23.08.2020 •
Mathematics
What is 8c + 10b ÷ 7a if c = 7, b = 12, and a = 5 Please give a full and good explanation for a brainliest...
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Ответ:
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
Ответ:
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
Ответ: