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Easy

Question

fraction numerator 4 x plus 6 over denominator 2 end fraction equals fraction numerator 3 x minus 15 over denominator 3 end fraction

hintHint:

An equation with variables on both sides of the "equal to" sign i.e. on LHS and RHS can be solved by first simplifying both the sides (Opening up the brackets, addition, subtraction, i.e. if any) and then all the variables are taken on 1 side of the equation and all the constants i.e. numbers on the other side. Both sides are then simplified further and the solution is obtained.

The correct answer is: Value of x for the given equation is -8.


    Step-by-step solution:-
    fraction numerator 4 x plus 6 over denominator 2 end fraction equals fraction numerator 3 x minus 15 over denominator 3 end fraction
                                                                                          ∴ 3 × (4x + 6) = 2 × (3x - 15) ................................. (Cross-multiplying)
                                                                                 ∴ (3 × 4x) + (3 × 6) = (2 × 3x) - (2 × 15) ..................... [Distributive property- a (m+n) = am + an]
                                                                                                ∴ 12x + 18 = 6x - 30
                                                                                                ∴ 12x - 6x = -30 - 18 …....................... (Taking all variables and constants on either                                                                                                                                                                                                               sides of the equation)
                                                                                                       ∴ 6x = -48
                                                                                                       ∴ x = fraction numerator negative 48 over denominator 6 end fraction ............................................. (Dividing both sides by 6)
                                                                                                         ∴ x = -8
    Final Answer:-
    ∴ Value of x for the given equation is -8.

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