Question

Qual e o resultado de 3x-4x=9​

Answer 1

↓Resposta↓

Simplifying

3x = 4x + -9

Reorder the terms:

3x = -9 + 4x

Solving

3x = -9 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.

3x + -4x = -9 + 4x + -4x

Combine like terms: 3x + -4x = -1x

-1x = -9 + 4x + -4x

Combine like terms: 4x + -4x = 0

-1x = -9 + 0

-1x = -9

Divide each side by '-1'.

x = 9

Simplifying

x = 9