Answer:
417.6
Step-by-step explanation:
In order to solve for x, you have to get x by itself.
78.2 + 0.5x =287 (First, you subtract 78.2 on both sides)
-78.2 -78.2
0.5x/0.5= 208.8/0.5 (now, you divide both side by 0.5)
Leaving with,
x = 417.6
so, x equals to 417.6
