Equations – Success if you can do these 3x = 6 4x + 2 = 3x + 7 x/4 = 2 5x – 3 = 7 + 3x x + 3 = 17 3(x + 2) = 12 x – 4 = 13 4(x + 5) = 32 3x + 4 = 25 3(2x – 2) = 2(x + 6) 4x – 3 = 17 4(3x + 5) = 2(x + 15)

How to solve the x + 3 = 10 type of equation The 3 and 10 Could be any number

But you must subtract 3 from both sides x + 3 =10 x + 3 – 3 = 10 - 3 x = 7 You get rid of the + 3 by - 3 But you must subtract 3 from both sides

just subtract 3 from both sides For equations like x + 3 = 10 just subtract 3 from both sides x + 3 = 10 x = 10 - 3 x = 7 Like this

How to solve the x – 3 = 7 type of equation The 3 and 7 can be any numbers

But you must to add 3 to both sides x – 3 = 7 x – 3 + 3 = 7 + 3 x = 10 You get rid of the – 3 by + 3 But you must to add 3 to both sides

x – 3 = 7 x – 3 + 3 = 7 + 3 x =10 For equations like x – 3 = 7 just add 3 to both sides x – 3 = 7 x – 3 + 3 = 7 + 3 x =10 Like this

Try these 1 x + 4 = 16 7 x – 5 = 12 2 x + 7 = 21 8 x – 7 = 3 3 9 x – 13 = 5 4 x + 12 = 28 10 x – 15 = 6 5 x + 6 = 7 11 x – 19 = 7 6 x + 23 = 52 12 x – 12 = 18

                              Remember, always do the same thing to both sides. Felix is checking that you do this properly. x + 3 = 12 x + 3 – 3 = 12 – 3 x = 9