5x-3=(x+7) +3x
5x-3 = 4x+7
-4x -4x ---Subtract 4x from both sides
x-3 = 7
+3 +3 ---Add three to both sides
x = 10
Let's check it:
5(10)-3=((10)+7) +3(10)
50-3 = 17+30
47 = 47
47 does equal 47; the statement is true, so we know this works.
A great answer NinjaDevo.
