Answer:
First one
Step-by-step explanation:
None of the equations are identities
I could use the points so if you want to mark this as helpful that would be cool :)
I would say all real numbers as the domain for this would be (-∞,∞).
However, I may be wrong, math is not my strong suit.
Assuming you need to solve for x:
-6(x + 6) - 10 = -2(5 + 4x)
start by distributing your numbers outside the front of your parentheses:
-6x - 36 - 10 = -10 - 8x
then combine like terms:
-6x - 46 = -10 - 8x ... add 10 to both sides (which technically could have cancelled out in the step prior, but regardless)
-6x - 36 = -8x ... add 6x to both sides
-36 = -2x ... divide both sides by -2
x = 18
