1 answer
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Starting with the given equation:
3(3x+4) - 6x = -9
Distribute the 3 to the terms inside the parentheses:
9x + 12 - 6x = -9
Combine like terms:
9x - 6x + 12 = -9
Combine like terms again:
3x + 12 = -9
Subtract 12 from both sides:
3x = -9 - 12
Simplify:
3x = -21
Divide both sides by 3:
x = -21/3
Simplify the fraction:
x = -7