Question

Por favor son 5 ecuaciones las necesito urgente

!!!!!!!!!!!!!!!!!POR FAVOR !!!!!!!!!!!!!!!!!!!!!!

AQUÍ LES DEJO EL PANTALLAZO DE LAS ECUACIONES
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88b184d513dde72ab55ec93475ae15d4.docx

Answer 1

Explicación paso a paso:

$a) \frac{2x}{3} = 10 \\\ 2x = 10 \times 3 \\ 2x = 30 \\ x = 30 \div 2 \\ x = 15 \\ \\ comprobación \\ \frac{2 \times 15}{3} = 10 \\ \\ \frac{30}{3} = 10 \\ \\ 10 = 10 \\ \\ b)3x - 4 = 24 - x \\ 3x + x = 24 + 4 \\ 4x = 28 \\ x = 28 \div 4 \\ x = 7 \\ \\ comprobación \\ 3 \times 7 - 4 = 24 - 7 \\ 21 - 4 = 24 - 7 \\ 17 = 17\\ \\ c) \frac{5x}{2} + 2 = 20 + 2 \\ \\ \frac{5x}{2} + 2 = 22 \\ \\ \frac{5x}{2} = 22 - 2 \\ \\ \frac{5x}{2} = 20 \\ \\ 5x = 20 \times 2 \\ 5x = 40 \\ x = 40 \div 5 \\ x = 8 \\ \\ comprobación \\ \frac{5 \times 8}{2} + 2 = 20 + 2 \\ \\ \frac{40}{2} + 2 = 22 \\ \\ 20 + 2 = 22 \\ 22 = 22 \\ \\ d) \frac{5 + x}{2} = \frac{4 + x}{4} \\ \\ \frac{5}{2} + \frac{x}{2} = \frac{4}{4} + \frac{x}{4} \\ \\ \frac{x}{2} - \frac{x}{4} = 1 - \frac{5}{2} \\ \\ \frac{2x - x}{4} = \frac{2 - 5}{2} \\ \\ \frac{1x}{4} = - \frac{3}{2} \\ \\ 1x = - \frac{3}{2} \times 4 \\ \\ x = - \frac{12}{2} \\ \\ x = - 6 \\ \\ comprobación \\ \frac{5 + ( - 6)}{2} = \frac{4 + ( - 6)}{4} \\ \\ \frac{5 - 6}{2} = \frac{4 - 6}{4} \\ \\ - \frac{1}{2} = - \frac{2}{4} \\ \\ - \frac{1}{2} = - \frac{1}{2} \\ \\ e) \frac{x}{3} - \frac{x}{2} = \frac{5}{7} \\ \\ \frac{2x - 3x}{6} = \frac{5}{7} \\ \\ - \frac{ 1}{6} x= \frac{5}{7} \\ \\ x = \frac{5}{7} \div ( - \frac{1}{6} ) \\ \\ x = - \frac{30}{7} \\ \\ comprobación \\( - \frac{30}{7} \div 3 )- ( - \frac{30}{7} \div 2) = \frac{5}{7} \\ \\ ( - \frac{30}{21} ) - ( - \frac{30}{14}) = \frac{5}{7} \\ \\ - \frac{30}{21} + \frac{30}{14} = \frac{5}{7} \\ \\ \frac{ - 60 + 90}{42} = \frac{5}{7} \\ \\ \frac{30}{42} = \frac{5}{7} \\ \\ \frac{5}{7} = \frac{5}{7}$