Answer:
x = 5
Explanation:
6x - 2x - 5 = -6 + 21
Add like terms on the left side. Add like terms on the right side.
4x - 5 = 15
Add 5 to both sides.
4x = 20
Divide both sides by 4.
6x-2x-5 = -6+21
Combine like terms.
Get the variable by itself by adding 5 to each side.
4x = 15 + 5
Simplify.
Divide.
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