Question

3. Resolver las ecuaciones:
a. --3a = -7 + 25 -
2b - 10b + 11 = 3b + 11
c. 7c- 1 + 4 = 0
d. 2(d + 3) - 6d = V-27​

Answer 1

a)

$- 3a = - 7 + 25 \\ - 3a = 18 \\ a = - 6$

b)

$2b - 10b + 11 = 3b + 11 \\ - 8b = 3b \\ - 11b = 0\\ b = 0$

c)

$\sqrt[3]{7c - 1} + 4 = 0 \\ \sqrt[3]{7c - 1} = - 4 \\ 7c -1 = - 64 \\ 7c = - 63 \\ c = - 9$

d)

$2(d + 3) - 6d = \sqrt[3]{ - 27} \\ 2d + 6 - 6d = - 3 \\ - 4d = - 9 \\ d = \frac{4}{9}$