x = -30⅔ or -30.666.... *repeating*
Step-by-step explanation:
to find out the missing variable you have to isolate the variable.
[tex]9 \times ( - 10) = 3x + 2 \\ - 90 = 3x + 2 \\ - 90 - 2= 3x + 2 - 2 \\ - 92 = 3x \\ - 92 \div 3 = 3x \div 3 \\ - 30.6666.... \: or \: - 30 \frac{2}{3} [/tex]