Question

ayuda porfavor antes de las 11​

Answer 1

Explicación paso a paso:

a)

$x - 10 + 2x - 20 = 90 \\ x + 2x = 90 + 20 + 10 \\ 3x = 120 \\ x = 40$

b)

$3x + 2x + x = 90 \\ 6x = 90 \\ x = 15$

c)

$4x - 10 + x + 15 = 180 \\ 5x = 180 - 15 + 10 \\ 5x = 175 \\ x = 35$

d)

$3x - 10 + 2x - 5 + x + 45 = 180 \\ 6x + 30 = 180 \\ 6x = 150 \\ x = 25$

e)

$\frac{x}{6} + \frac{x}{2} + \frac{x}{3} = 180$

MCM(6;2;3)=6

$\frac{x + 3x + 2x}{6} = 180 \\ \frac{6x}{6} = 180 \\ x = 180$

f)

$\frac{7}{4} x + 10 + 2x + 15 + \frac{5}{4} x + 20+ \frac{3}{2} x + 5 = 180 \\ \frac{7}{4} x + \frac{5}{4} x + \frac{3}{2} x + 2x + 50 = 180 \\ \frac{7x + 5x + 6x}{4} + 2x = 130 \\ \frac{18x}{4} + 2x = 130 \\ \frac{18x + 8x}{4} = 130 \\ 26x = 520 \\ x = 20$

espero haberte ayudado