(7a+3)-(8-2a) 4*5/7:13/4

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вопрос

To solve this expression, we need to follow the order of operations (parentheses, exponents, multiplication and division from left to right, addition and subtraction from left to right).

First, simplify the expression inside the parentheses:
(7a + 3) - (8 - 2a)
= 7a + 3 - 8 + 2a
= 9a - 5

Now, let's simplify the division:
4 5 / 7 : 13 / 4
= 20 / 7 : 13 / 4
= 20 / 7 4 / 13
= 80 / 91

So, the final result is:
(9a - 5) * (80/91)