Question

1) 8⋅(4+y)−3y=6y−65. 2)−19−1,7y=52,5+3,8y 3)1/5x+3=17−1/20x.

Answer 1

Ответ:

1-33

2- -13

3- 56

Пошаговое объяснение:

1)8*4+8у-3у=6у-65

32+5у-6у=65

-1у=65-32

-у=33

у=33

2) -19-1,7у=52,5+3,8у

-3,8у-1,7у=52,5+19

-5,5у=71,5

у= 71,5\-5,5

у= -13

3) 1\5х+3=17-1\20х

1\5х(*4)+1\20х=17-3

4\20х+1\20х=14

5\20х=14

1\4х=14

х=14*4

х=56

Answer 2

It looks like you've provided three equations. If you're looking for solutions to these equations, I can help you solve them step by step. Let's solve each equation:

Equation 1:

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8(4+y) - 3y = 6y - 65

Step 1: Distribute the 8 on the left side:

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32 + 8y - 3y = 6y - 65

Step 2: Combine like terms on both sides:

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32 + 5y = 6y - 65

Step 3: Subtract 6y from both sides to isolate the variable:

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5y - 6y = -65 - 32
-1y = -97

Step 4: Divide by -1 to solve for y:

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y = 97

Equation 2:

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-19 - 1.7y = 52.5 + 3.8y

Step 1: Add 1.7y and subtract 52.5 from both sides:

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-19 - 52.5 = 3.8y + 1.7y
-71.5 = 5.5y

Step 2: Divide by 5.5 to solve for y:

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y = -71.5 / 5.5
y ≈ -13

Equation 3:

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(1/5)x + 3 = 17 - (1/20)x

Step 1: Add (1/20)x to both sides:

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(1/5)x + (1/20)x + 3 = 17

Step 2: Find a common denominator for the fractions and combine:

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(4/20)x + (1/20)x + 3 = 17
(5/20)x + 3 = 17

Step 3: Subtract 3 from both sides:

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(5/20)x = 17 - 3
(5/20)x = 14

Step 4: Divide by 5/20 (which is the same as multiplying by 20/5) to solve for x:

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x = 14 * (20/5)
x = 56

So, the solutions are:

1. y = 97
2. y ≈ -13
3. x = 56