QUIZ OF THE DAY

QUIZ OF THE DAY

Find the next two terms in the sequence :

1, 3, 7, 15, 31, …..       (March 2013)

Equations in One Variable

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Each one of the following is an equation is one variable. There are terms with variables on both sides of the equation. The equations have been solved using the rules of equality. Study them.

              Method                                                     Explanation

Ex. 1.  8y + 5 = 3y + 20              Simplified form using the             

∴ 8y – 3y + 5 = 3y – 3y + 20      subtraction property of an

∴ 5y + 5 = 20                                 equation.

∴ 5y + 5 – 5 = 20 – 5

∴ 5y = 15                                       Simplified form using the division

∴  =    ∴ y = 3                property of an equation.

                        Solution of the equation : 3

Solve the equations.

(1)  y – 2 = 9

(2)  p + 3 = 12

(3)  3x = 18

(4)  m/4 = 8