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Grade 7 - Mathematics6.21 Solution of Simple Equations - V

 Transposition: Changing a term from one side of an equation to the other side is called transposition. If a term is moved (Transposed) from one side of an equation to the other then the sign of the term is changed. If a quantity dividing a side is moved (Transposed) to the other side, it multiplies the other side. If a quantity multiplying a side is moved (Transposed) to the other, it divides the other side. If the same term (same both in magnitude and sign) is present on both sides of an equation then it can be cancelled. Example: Solve the equation 2x+4 = 8. Solution: Moving (Transposing) +4 to the other side i.e., R.H.S. 2x = 8-4 2x = 4 Taking 2, which is a multiplying quantity to L.H.S. x = 4/2 x = 2 Verification: Substituting x = 2 in the equation L.H.S. Þ 2x+4 = 2*2 + 4 = 4 + 4 = 8 = R.H.S. \ x = 2 is the solution. Answer: 2 Directions: Solve the following equations. Also write at least ten examples of your own.
 Q 1: Solve the equation 12x + 2 = 26.Answer: Q 2: Solve the equation 4x + 5 = 9.Answer: Q 3: Solve the equation 6x + 3 = 9.Answer: Q 4: Solve the equation 9x + 3 = 21.Answer: Q 5: Solve the equation 7x + 5 = 19.Answer: Q 6: Solve the equation 15x + 5 = 140.Answer: Question 7: This question is available to subscribers only! Question 8: This question is available to subscribers only!