Simple,
x+7= 18-2x
you want isolate the variable, x, to find what it's value is...
x+7=18-2x
+2x +2x
Making it..
3x+7=18
still not done...finish isolating the variable...
3x+7=18
-7 -7
3x=11
\(\frac{3x}{3x} = \frac{18}{3}\)
=\(\frac{11}{3}=3.7 (rounded)\)
Thus, your answer is, x=\(\frac{11}{3}\).
