30-x=2(x+6)
30 less a number means 30-x and the sum of the number and 6 is x+6
9514 1404 393
Explanation:
Add 2x to both sides
-3x=6
Divide both sides by-3
x=-2
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First you want to separate the variable terms and constant terms. Here, that is done by adding the opposite of -2x to both sides.
Then you want to divide by the coefficient of x, so you have the variable by itself. Since the coefficient after the first step is -3, you divide both sides by -3.
43/100 ... you can't reduce since nothing goes evenly into both the numberator and denominator
(a - b)⁴ = a⁴ - 4a³b + 6a²b² - 4ab³ + b⁴
(a + b)⁴ = a⁴ + 4a³b + 6a²b² + 4ab³ + b⁴
Then
(a - b)⁴ - (a + b)⁴ = - 8a³b - 8ab³
… = -8ab (a² + b²)
… = -8 (∛100 - ∛10 + 1) (1 + ∛10)
… = -8 (∛100 + ∛1000 - ∛10 - ∛100 + 1 + ∛10)
… = -8 (∛1000 + 1)
… = -8 (10 + 1)
… = -8 • 11
… = -88
Answer:10
Step-by-step explanation:That's the answer