4 (2x + 3) = 12
Eliminate the parentheses on the left side:
8x + 12 = 12
Subtract 12 from each side of the equation:
8x = 0
Divide each side by 8:
x = 0
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There are two possible (and different) answers: 2x + 3y = 12 or 2*(x + 3y)= 12 The first one is (twice a number) increased by (three times another) The second is twice (a number increased by (three times another)).
My number is 11.
Let the number be x and so if 2x = 12 then x = 6 and so 3x = 18
As an algebraic expression this is written 2x - 12, where x is the unknown number.
so the difference between twelve and -34 is 46. half of 46 is 23, That's your answer