Question

0,3у + 2 (0,2у −0,3) = 0,8−0,7 (у −2);

Answer 1

Відповідь:

у=2

Покрокове пояснення:

0,3у+2(0,2у−0,3)=0,8−0,7(у−2)

0,3у+0,4у-0,6=0,8-0,7у+1,4

0,3у+0,4у+0,7у=0,8+1,4+0,6

1,4у=2,8

у=2,8÷1,4

у=2

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Answer 2

To solve the equation $0.3y + 2(0.2y - 0.3) = 0.8 - 0.7(y - 2)$, you'll need to follow these steps:

1. Distribute the numbers inside the parentheses on both sides of the equation:

$0.3y + 0.4y - 0.6 = 0.8 - 0.7y + 1.4$

2. Combine like terms on each side of the equation:

$0.7y - 0.6 = 2.2 - 0.7y$

3. Add $0.7y$ to both sides of the equation to get the variables on one side:

$0.7y + 0.7y - 0.6 = 2.2 - 0.7y + 0.7y$

This simplifies to:

$1.4y - 0.6 = 2.2$

4. Add 0.6 to both sides of the equation to isolate the $1.4y$ term:

$1.4y - 0.6 + 0.6 = 2.2 + 0.6$

Simplifying further:

$1.4y = 2.8$

5. Finally, divide both sides by 1.4 to solve for $y$:

$\frac{1.4y}{1.4} = \frac{2.8}{1.4}$

$y = 2.0$

So, the solution to the equation is $y = 2.0$.