Question

faça os cálculos no caderno conforme anteriores 8x - 16 = 3x + 9​

Answer 1

Resposta:

x=5

Explicação passo-a-passo:

8x-16=3x+9

8x-3x=9+16

5x=25

x=25/5

x=5

Answer 2

Resposta: x=5

Explicação passo-a-passo:

Simplifying

8x + -16 = 3x + 9

Reorder the terms:

-16 + 8x = 3x + 9

Reorder the terms:

-16 + 8x = 9 + 3x

Solving

-16 + 8x = 9 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.

-16 + 8x + -3x = 9 + 3x + -3x

Combine like terms: 8x + -3x = 5x

-16 + 5x = 9 + 3x + -3x

Combine like terms: 3x + -3x = 0

-16 + 5x = 9 + 0

-16 + 5x = 9

Add '16' to each side of the equation.

-16 + 16 + 5x = 9 + 16

Combine like terms: -16 + 16 = 0

0 + 5x = 9 + 16

5x = 9 + 16

Combine like terms: 9 + 16 = 25

5x = 25

Divide each side by '5'.

x = 5

Simplifying

x = 5