123
of 3

What to Do - Putting Parts 1 & 2 Together

Check it out:

9 - 3x + 3x = 5x + 3x + 6 ditch the 6... 9 - 6 = 8x +6 -6 ditch the 8... 3 / 8 = 8x / 8 which gives 3/8 = x

Check it by sticking it back into both sides:

9 - 3x = 5x + 6 substitute 9 - 3(3/8) = 5(3/8) + 6 which gives 72/8 - 9/8 = 15/8 + 48/8 which gives 63/8 = 63/8

YOUR TURN:

Solve          2x + 9 = 6x - 3          *And check it!