7x-5+2x=3-4x+12
7x+2x-5=3+12-4x
9x-5=15-4x
9x+4x-5=15-4x+4x
13x-5=15
13x-5+5=15+5
13x=20
13x/13=20/13
x=20/13
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34x + 72 is the answer to the equation 12 plus 6x-4 5 plus 2 3x-1.
Yes, this is a polynomial (or quadratic) equation. X is the variable. So, for instance, if x=2, then the answer would be 96 + 68 + 12 = 176.
46
12 plus 9 equals 21.
12 + 10 + 11 equals 33