Question

HOLA ME AYUDAN POR FA!!!!
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Answer 1

Explicación paso a paso:

a)

$5x + 18 = 8 \\ 5x = 8 - 18 \\ 5x = - 10 \\ x = - 2 \\ comprobacion \\ 5( - 2) + 18 = 8 \\ - 10 + 18 = 8 \\ 8 = 8$

b)

$13x + 2 = 5x + 18 \\ 13x - 5x = 18 - 2 \\ 8x = 16 \\ x = 2$

c)

$4 \times (9x - 5) = - 11 + 63 \\ 36x - 20 = 52 \\ 36x = 72 \\ x = 2$

d)

$4 (x + 7) - 6 = 9(x - 2) \\ 4x + 28 - 6 = 9x - 18 \\ 22 + 18 = 9x - 4x \\ 40 = 5x \\ 8 = x$

e)

$\frac{6x + 8}{2} = 2x + 1 \\ 6x + 8 = 4x + 2 \\ 2x = - 6 \\ x = - 3$

f)

$x + 5 = \frac{10x - 6}{3} \\ 3x + 15 = 10x - 6 \\ 15 + 6 = 10x - 3x \\ 21 = 7x \\ 3 = x$

g)

$\sqrt{x} - 25 = - 7 \\ x - 25 = 49 \\ x = 49 + 25 \\ x = 74$

h)

${x}^{3} - 102 = 410 \\ {x}^{3} = 512 \\ x = \sqrt[3]{512} \\ x = 8$

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