How do you solve #5- 2( x + 4) - 6x = x + 15#?

Answer 1

Ethan Adkins

#x=-2#

#5-2x-2*4-6x=x+15#

#5-2x-8-6x=x+15#

#-3-8x=x+15#

#-8x-x=15+3#

#-9x=18#

#x=18/(-9)#

#x=-2#

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Answer 2

Jameson Allen

To solve 5 - 2(x + 4) - 6x = x + 15:

Distribute the -2 through the parentheses: 5 - 2x - 8 - 6x = x + 15
Combine like terms on the left side: -2x - 6x - 3 = x + 15
Add 3x to both sides: -3 + 3x = x + 15
Subtract x from both sides: -3 + 3x - x = 15
Simplify: -3 + 2x = 15
Add 3 to both sides: 2x = 18
Divide both sides by 2: x = 9

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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