To express 2y = 3x + 12 in standard form, move the terms with variables to the one side of the equals sign and move the number-only term to the opposite side. In this case, only the 3x needs to be moved to satisfy this requirement; so, simply subtract 3x from both sides:
2y - 3x = 12
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2x+12-3x = 5 2x-3x = 5-12 x = -7
y=3x+12
12 plus 9 equals 21.
12 + 10 + 11 equals 33
yes. think of 6/12 plus 1/12. that is 7/12!