Question

a) 10x+4=9x+5

b) 20x+20=10x+120

c) -x+4.2=24

d) 4-x=10

gente bella, me ayudan a hacer esto que no lo entiendo y todavía tengo que hacer la verificación
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Answer 1

Respuesta:

Simplifying

10x + -4 = 9x + 5

Reorder the terms:

-4 + 10x = 9x + 5

Reorder the terms:

-4 + 10x = 5 + 9x

Solving

-4 + 10x = 5 + 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.

-4 + 10x + -9x = 5 + 9x + -9x

Combine like terms: 10x + -9x = 1x

-4 + 1x = 5 + 9x + -9x

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

-4 + 1x = 5 + 0

-4 + 1x = 5

Add '4' to each side of the equation.

-4 + 4 + 1x = 5 + 4

Combine like terms: -4 + 4 = 0

0 + 1x = 5 + 4

1x = 5 + 4

Combine like terms: 5 + 4 = 9

1x = 9

Divide each side by '1'.

x = 9

Simplifying

x = 9