Question

{7×- 2y = -20}
{-x + 18y=56} ARGUIEN ME PUEDE AYUDAR ​

Answer 1

Respuesta:

Simplifying

18(x + y) + 56 = 9(x + 2y) + 92

(x * 18 + y * 18) + 56 = 9(x + 2y) + 92

(18x + 18y) + 56 = 9(x + 2y) + 92

Reorder the terms:

56 + 18x + 18y = 9(x + 2y) + 92

56 + 18x + 18y = (x * 9 + 2y * 9) + 92

56 + 18x + 18y = (9x + 18y) + 92

Reorder the terms:

56 + 18x + 18y = 92 + 9x + 18y

Add '-18y' to each side of the equation.

56 + 18x + 18y + -18y = 92 + 9x + 18y + -18y

Combine like terms: 18y + -18y = 0

56 + 18x + 0 = 92 + 9x + 18y + -18y

56 + 18x = 92 + 9x + 18y + -18y

Combine like terms: 18y + -18y = 0

56 + 18x = 92 + 9x + 0

56 + 18x = 92 + 9x

Solving

56 + 18x = 92 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.

56 + 18x + -9x = 92 + 9x + -9x

Combine like terms: 18x + -9x = 9x

56 + 9x = 92 + 9x + -9x

Combine like terms: 9x + -9x = 0

56 + 9x = 92 + 0

56 + 9x = 92

Add '-56' to each side of the equation.

56 + -56 + 9x = 92 + -56

Combine like terms: 56 + -56 = 0

0 + 9x = 92 + -56

9x = 92 + -56

Combine like terms: 92 + -56 = 36

9x = 36

Divide each side by '9'.

x = 4

Simplifying

x = 4

Explicación paso a paso:

oajala ayude