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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 The equation 3 and 10 Could be any number You get rid + 3 by - 3 of the x + 3 =10 x + 3 – 3 = 10 - 3 x=7 But you must 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 You get rid – 3 by + 3 of the x–3=7 x–3+3=7+3 x = 10 But you must to add 3 to both sides 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 x + 9 = 35 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