Question

plz solve the above equations.​

Answer 1

Step-by-step explanation:

$a) : \frac{x + 2}{3} - \frac{x + 1}{5} = \frac{x - 3}{4} - 1 \\ \frac{5(x + 2) - 3( x+ 1)}{3 \times 5} = \frac{x - 3 - 4}{4} \\ \frac{5x + 10 - 3x - 3}{15} = \frac{x - 7}{4} \\ \frac{2x + 7}{15} = \frac{x - 7}{4} \\ 4(2x + 7) = 15(x - 7) \\ 8x + 28 = 15x - 105 \\ 105 + 28 = 15x - 8x \\ 133 = 7x \\ x = 19 \\ b) : 0.16(5x - 2) = 0.4x + 7 \\ 0.8x - 0.32 = 0.4x + 7 \\ 0.8x - 0.4x = 0.32 + 7 \\ 0.4x = 7.32 \\ x = 18.3 \\ c ): \frac{2x + 1}{3x - 2} = \frac{9}{10} \\ 10(2x + 1) = 9(3x - 2) \\ 20x + 10 = 27x - 18 \\ 18 + 10 = 27x - 20x \\ 28 = 7x \\ x = 4 \\ d) : \frac{3x + 5}{2x + 7} = 4 \\ 3x + 5 = 4(2x + 7) \\ 3x + 5 = 8x + 28 \\ 5 - 28 = 8x - 3x \\ - 23 = 5x \\ x = \frac{ - 23}{5}$

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