Solve 2x-42x-4 - ScanMath

Question

Simplify the expression

- 40 x - 4

Evaluate

2 x - 42 x - 4

Solution

More Steps

Evaluate

2 x - 42 x

Collect like terms by calculating the sum or difference of their coefficients

(2 - 42) x

Subtract the numbers

- 40 x

- 40 x - 4

Show Solution

- 4 (10 x + 1)

Evaluate

2 x - 42 x - 4

Subtract the terms

More Steps

Evaluate

2 x - 42 x

Collect like terms by calculating the sum or difference of their coefficients

(2 - 42) x

Subtract the numbers

- 40 x

- 40 x - 4

Solution

- 4 (10 x + 1)

Show Solution

x = - \frac{1}{10}

Alternative Form

x = - 0.1

Evaluate

2 x - 42 x - 4

To find the roots of the expression,set the expression equal to 0

2 x - 42 x - 4 = 0

Subtract the terms

More Steps

Simplify

2 x - 42 x

Collect like terms by calculating the sum or difference of their coefficients

(2 - 42) x

Subtract the numbers

- 40 x

- 40 x - 4 = 0

Move the constant to the right-hand side and change its sign

- 40 x = 0 + 4

Removing 0 doesn't change the value,so remove it from the expression

- 40 x = 4

Change the signs on both sides of the equation

40 x = - 4

Divide both sides

\frac{40 x}{40} = \frac{- 4}{40}

Divide the numbers

x = \frac{- 4}{40}

Solution

More Steps

Evaluate

\frac{- 4}{40}

Cancel out the common factor 4

\frac{- 1}{10}

Use \frac{- a}{b} = \frac{a}{- b} = - \frac{a}{b} to rewrite the fraction

- \frac{1}{10}

x = - \frac{1}{10}

Alternative Form

x = - 0.1

Show Solution