Question

ayuda por fa es de mate.......​

Answer 1

$\frac{3x + 1}{2} = 11 \\ 3x + 1 = 11 \times 2 \\ 3x = 22 - 1 \\ 3x = 21 \\ x = \frac{21}{3} \\ x = 7 \\ comprobacion = \\ \frac{3x + 1}{2} = 11 \\ \frac{3(7) + 1}{2} = 11 \\ \frac{21 + 1}{2} = 11 \\ \frac{22}{2} = 11 \\ 11 = 11$

$10x - 8 = 20 + 3x \\ 10x - 3x = 20 + 8 \\ 7x = 28 \\ x = \frac{28}{7} \\ x = 4 \\ comprobacion = \\ 10x - 8 = 20 + 3x \\ 10(4) - 8 = 20 + 3(4) \\ 40 - 8 = 20 + 12 \\ 32 = 32$

$6x = 48 - 2x \\ 6x + 2x = 48 \\ 8x = 48 \\ x = \frac{48}{8} \\ x = 6 \\ comprobacion = \\ 6x = 48 - 2x \\ 6(6) = 48 - 2(6) \\ 36 = 48 - 12 \\ 36 = 36$

$\frac{6x - 9}{9} = 3 \\ 6x - 9 = 3 \times 9 \\ 6x = 27 + 9 \\ 6x = 36 \\ x = \frac{36}{6} \\ x = 6 \\ comprobacion = \\ \frac{6x - 9}{9} = 3 \\ \frac{6(6) - 9}{9} = 3 \\ \frac{36 - 9}{9} = 3 \\ \frac{27}{9} = 3 \\ 3 = 3$

$7x - 10 = 45 - 4x \\ 7x + 4x = 45 + 10 \\ 11x = 55 \\ x = \frac{55}{11} \\ x = 5 \\ comprobacion = \\ 7x - 10 = 45 - 4x \\ 7(5) - 10 = 45 - 4(5) \\ 35 - 10 = 45 - 20 \\ 25 = 25$

$2x + 6 = 10 \\ 2x = 10 - 6 \\ 2x = 4 \\ x = \frac{4}{2} \\ x = 2 \\ comprobacion = \\ 2x + 6 = 10 \\ 2(2) + 6 = 10 \\ 4 + 6 = 10 \\ 10 = 10$

$\frac{4x - 2}{2} = 13 \\ 4x - 2 = 13 \times 2 \\ 4x = 26 + 2 \\ 4x = 28 \\ x = \frac{28}{4} \\ x = 7 \\ comprobacion = \\ \frac{4x - 2}{2} = 13 \\ \frac{4(7) - 2}{2} = 13 \\ \frac{28 - 2}{2} = 13 \\ \frac{26}{2} = 13 \\ 13 = 13$

$7x - 2 = 5x + 20 \\ 7x - 5x = 20 + 2 \\ 2x = 22 \\ x = \frac{22}{2} \\ x = 11 \\ comprobacion = \\ 7(11) - 2 = 5(11) + 20 \\ 77 - 2 = 55 + 20 \\ 75= 75$

$\frac{x + 3}{2} = \frac{x + 6}{3} \\ 3(x + 3) = 2(x + 6) \\ 3x + 9 = 2x + 12 \\ 3x - 2x = 12 - 9 \\ x = 3 \\ comprobacion = \\ \frac{x + 3}{2} = \frac{x + 6}{3} \\ \frac{3 + 3}{2} = \frac{3 + 6}{3} \\ \frac{6}{2} = \frac{9}{3} \\ 3 = 3$

$5(x + 3) = 4(x + 5) \\ (5x + 15) = (4x + 20) \\ 5x - 4x = 20 - 15 \\ x = 5 \\ comprobacion = \\ 5( x + 3) = 4(x + 5) \\ 5(5 + 3) = 4(5 + 5) \\ 5(8) = 4(10) \\ 40 = 40$

$saludossssssssss$