Question

Me ajudem a resolver essas 4 equações???

Resolva as seguintes equações, sendo : U=Q

X/2 + 3x/5 = 6


X-3/4 - 2x-1/5 = 5


X/5 - 2 = 5(x-3)/4


X-1/2 + X-2/3 = X-3/4

Answer 1

Explicação passo-a-passo:

A) $\frac{X}{2} +3x \frac{X}{5} =6$

$\frac{X}{2} + \frac{3X}{5} =6$

5x+6x=60

11x=60

X= $\frac{60}{11}$

B) x- $\frac{3}{4} - 2x - \frac{1}{5} = 5$

-x -$\frac{3}{4} - \frac{1}{5} = 5$

-x =5+ $\frac{19}{20}$

-x = $\frac{119}{20}$

x= - $\frac{119}{20}$

C) $\frac{x}{5} - 2= 5x \frac{x-3}{4}$

$\frac{x}{5} - 2= \frac{5(x-3)}{4}$

$\frac{x}{5} - 2 = \frac{5x-15}{4}$

4x - 40 = 5(5x - 15)

4x - 40 = 25x - 75

4x-25x = -75+40

-21x = -75+40

-21x = - 35

$x= \frac{5}{3}$

D) - $X-\frac{1}{2} + X-\frac{2}{3} = X-\frac{3}{4}$

$- \frac{1}{2} + x - \frac{2}{3} = - \frac{3}{4}$

$- \frac{7}{6} + x = - \frac{3}{4}$

$x = - \frac{3}{4} +\frac{7}{6}$

$x = \frac{5}{12}$