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polet [3.4K]
2 years ago
12

3х + 5(1 +7x) = 3х – 30

Mathematics
2 answers:
weqwewe [10]2 years ago
4 0
3x + (5+35x) = 3x -30
38x + 5 = 3x -30
38x = 3x -35
35x = -35
x = -1
satela [25.4K]2 years ago
4 0

Answer:-1

Step-by-step explanation:

3x+5(1+7x)=3x-30

Open bracket

3x+5+35x=3x-302

Collect like terms

3x+35x-3x=-30-5

35x=-35

Divide both sides by 35

35x÷35=-35÷35

X=-1

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Answer:

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Step-by-step explanation:

Simplify -5x+3y=2x

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Solve the following rational equation plz help!!
Yuri [45]

Answer:

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Step-by-step explanation:

Given

\frac{4x}{x+1} - \frac{5}{x} = \frac{4}{x^2+x} ← factor denominator

\frac{4x}{x+1} - \frac{5}{x} = \frac{4}{x(x+1)}

[ x ≠ 0, x ≠ - 1 as these would make the terms undefined ]

Multiply through by x(x + 1)

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4x² - 5x - 9 = 0 ← in standard form

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Equate each factor to zero and solve for x

x + 1 = 0 ⇒ x = - 1

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