Question

5x+7/2-(2x-4)=3x+9/4

Answer 1

$\frac{5x + 7}{2} - 2x + 4 = \frac{3x + 9}{4} \\ \frac{5x + 7 - 4x}{2} + 4 = \frac{3x + 9}{4} \\ \frac{x + 7}{2} + 4 = \frac{3x + 9}{4} \\ \frac{x + 7 + 8}{2} = \frac{3x + 9}{4} \\ \frac{x + 15}{2} = \frac{3x + 9}{4} \\ 4(x + 15) = 2(3x + 9) \\ 4x + 60 = 6x + 18 \\ 60 - 18 = 6x - 4x \\ 42 = 2x \\ 42 \div 2 = x \\ 21 = x$