Question

1.)0,5(0,7y-03)-0,7(0,5+0,4)=

Answer 1

0,5•0,7у-0,5•0,3-0,7•0,5-0,7•0,4=
=0,35у-0,15-0,35-0,28=0,35у-0,75
Ответ:0,35у-0,75

Answer 2

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Answer 3

To solve this expression, you can follow the order of operations (PEMDAS/BODMAS), which stands for Parentheses/Brackets, Exponents/Orders, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).

Let's simplify the expression step by step:

1. Start with the parentheses:

   0.5(0.7y - 0.3) - 0.7(0.5 + 0.4)

2. Now, perform the operations inside each set of parentheses:

   = 0.5 * (0.7y - 0.3) - 0.7 * (0.5 + 0.4)

3. Distribute the constants outside the parentheses to the terms inside:

   = 0.35y - 0.15 - 0.35 - 0.28

4. Combine like terms:

   = (0.35y - 0.35) - (0.15 + 0.28)

5. Continue simplifying:

   = 0.35(y - 1) - 0.43

So, the simplified expression is 0.35(y - 1) - 0.43.