Question

Find the value of x in:

x + 10 = 2x - 5 ​

Answer 1

Answer:

x + 10 = 2x - 5

10 + 5 = 2x - x

x = 15

Answer 2

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Simplifying

x + 10 = -2x + -5

Reorder the terms:

10 + x = -2x + -5

Reorder the terms:

10 + x = -5 + -2x

Solving

10 + x = -5 + -2x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '2x' to each side of the equation.

10 + x + 2x = -5 + -2x + 2x

Combine like terms: x + 2x = 3x

10 + 3x = -5 + -2x + 2x

Combine like terms: -2x + 2x = 0

10 + 3x = -5 + 0

10 + 3x = -5

Add '-10' to each side of the equation.

10 + -10 + 3x = -5 + -10

Combine like terms: 10 + -10 = 0

0 + 3x = -5 + -10

3x = -5 + -10

Combine like terms: -5 + -10 = -15

3x = -15

Divide each side by '3'.

x = -5

Simplifying

x = -5

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