Question

Resolve esta questão,porfavor:

Answer 1

a)

$\frac{x + 4(7)}{4} = \frac{2(x) + 4(5)}{4}$

$x + 28 = 2 x + 20$

$x = 8$

S={8}

b)

$\frac{2(x - 5) + 3(3x - 1)}{6} = \frac{6(4)}{6}$

$2x - 10 + 9x - 3 = 24$

$11x = 24 + 10 + 3$

$11x = 37$

$x = \frac{37}{11}$

S={37/11}

c)

$\frac{x}{4} + \frac{4(5)}{4} = \frac{2(x)}{4} + 4(6)$

$x + 20 = 2x + 24$

$x = - 4$

S={-4}

d)

$\frac{2(x - 4)}{6} + \frac{3(2x - 1)}{6} = \frac{6(2)}{6}$

$2x - 8 + 6x - 3 = 12$

$8x = 23$

$x = \frac{23}{8}$

S={23/8}