Respuesta :

TheBreeze
First, open the parentheses (make sure you distribute the '-':

6x - 3x - 4 = x - 40
3x - 4 = x - 40
2x = -36
x = -18

The solution set is {-18}

Answer:

x = 22

Step-by-step explanation:

6x - (3x + 4) = x - 40

6x - 3x - 4 = x - 40   <distribute the negative

3x - 4 = x - 40   <combine like terms

-x           -x   <subtract x from both sides

2x - 4 = 40

   +4      +4   <add 4 to both sides

2x = 44   <divide both sides by 2

x = 22

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