Verified Answer :

-5x-10=2(x-4)
-5x-10=(2•x)(2•(-4)
-5x-10=2x-8
-5x-10+10=2x-8+10
-5x=2x+2
-5x-2x=2x-2x+2
-3x=2
-3x\-3=2\-3
x=0.666
x=0.67

ArGM2015

Let us take this step by step:

-5x - 10 = -2x - 8

Then you bring the variables in the same side (also reversing - to + or + to -):

-5x + 2x = 10 - 8

Do the addition and subtraction:

-3x = 2

x = \frac{2}{3} 


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