the answer is 3 and here's why
3x-2=7
add 2 to both sides of the equation
(3x-2)+2=7+2
simplify
3x=9
divide both sides by 3
3x/3=9/3
simplify
x=3
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no...no not quite, its 13, Here:3x2+7=x 3 times 2 equals 66+7=x 6 plus 7 equals 1313=x 13 equals xThere's yours answer, wasnt quite sure if it was a serious question or not but there ya go.
3x2 = 21 describes two single values, and does not have an x intercept. 3x2 = 21 ∴ x2 = 7 ∴ x = ±√7
3x2= 6 6-(4x-2)= 6--8= 6+8 = 14 14+7 = 21
3 x 2 + x = -7 >> 6 + X = -7 >>> x = -13
No. 7*3, alone, is bigger than 12.