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3 years ago

Solve the equations 14 + 5/7x - 20 = 4/7x -4

Mathematics

2 answers:

gulaghasi [49]3 years ago

8 0

Answer:

$x = 14$

Step-by-step explanation:

5/7x-4/7x=20-14-4

1/7x=2

x=14

schepotkina [342]3 years ago

8 0

14 + 5/7x - 20 = 4/7x -4
-6+5/7x = 4/7x-4
5/7x-4/7x = 6-4
7*1/7x = 2*7
x =14

The solution is x=14.

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sveticcg [70]

Answer:

$1.\ 8p = 64, p =8$

$2. -\dfrac{w}{4} = 8, w = -32$

$3. -5c = -20, c =4$

$4.\ 9m=45, m = 5$

$5. \dfrac{b}{25} = -3, b =-75$

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Step-by-step explanation:

Now let us see the detailed solution of each part:

Part 1:

$8p -15 = 49\\\Rightarrow 8p =49+15\\\Rightarrow 8p = 64\\\Rightarrow p =8$

Part 2:

$\dfrac{-w}{4}+18=26\\\Rightarrow \dfrac{-w}{4} = 26-18\\\Rightarrow \dfrac{-w}{4} = 8\\\Rightarrow -w = 8 \times 4\\\Rightarrow w =-32$

Part 3:

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Part 4:

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Part 6:

$\dfrac{d}{-2}+85=105\\\Rightarrow \dfrac{d}{-2} = 105-85\\\Rightarrow \dfrac{d}{-2} = 20\\\Rightarrow d=20 \times -2\\\Rightarrow d =-40$

Please refer to attached image for the answers.

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