The equation was given to three students

MATHEMATICS · Multi-part · CBSE · Mathematics · Algebra Play · Algebra Play

Problem

The equation 7x+3=2x+187x+3=2x+18 was given to three students. Each of them suggested a different value for xx. The suggested values are 3,  43,\;4 and 55. (i) For x=3x=3, calculate the left-hand side (LHS) and the right-hand side (RHS) of the equation and state whether they are equal. (ii) Repeat the above process for x=4x=4. (iii) Repeat the above process for x=5x=5. (iv) From your calculations in parts (i)–(iii), identify the value(s) of xx that satisfy the equation.

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