Question

Resolva as seguintes equações:
a)x/4-x/6=3 b)3x/4-x/3=5 c)x/5-1=9
d)x/3-5=0 e)x/2+3x/5=6 g)5x-10=x+1/2
h)8x-1/2-2x=3 i)2x-7/5=x+2/3

Answer 1

teve alguns partes q a foto cortou mais e so da uma olhada com atenção q verá a resposta completa, espero ter ajudado

Answer 2

Explicação passo-a-passo:

A)

$\dfrac{x}{4} - \dfrac{x}{6} = 3$

$3x - 2x = 36$

$x = 36$

B)

$\dfrac{3x}{4} - \dfrac{x}{3} = 5$

$9x - 4x = 60$

$5x = 60$

$x = \dfrac{60}{5}$

$x = 12$

C)

$\dfrac{x}{5} - 1 = 9$

$x - 5 = 45$

$x = 45 + 5$

$x = 50$

D)

$\dfrac{x}{3} - 5 = 0$

$x - 15 = 0$

$x = 0 + 15$

$x = 15$

E)

$\dfrac{x}{2} + \dfrac{3x}{5} = 6$

$5x + 6x = 60$

$11x = 60$

$x = \dfrac{60}{11}$

G)

$5x - 10 = x + \dfrac{1}{2}$

$5x - x = \dfrac{1}{2} + 10$

$4x = \dfrac{1 + 20}{2}$

$4x = \dfrac{21}{2}$

$4x \div 4 = \dfrac{21}{2} \div 4$

$x = \dfrac{21}{2} \times \dfrac{1}{4}$

$x = \dfrac{21}{8}$

H)

$8x - \dfrac{1}{2} - 2x = 3$

$6x - \dfrac{1}{2} = 3$

$6x = 3 + \dfrac{1}{2}$

$6x = \dfrac{6 + 1}{2}$

$6x = \dfrac{7}{2}$

$6x \div 6 = \dfrac{7}{2} \div 6$

$x = \dfrac{7}{2} \times \dfrac{1}{6}$

$x = \dfrac{7}{12}$

I)

$2x - \dfrac{7}{5} = x + \dfrac{2}{3}$

$2x - x = \dfrac{2}{3} + \dfrac{7}{5}$

$x = \dfrac{10 + 21}{15}$

$x = \dfrac{31}{15}$