Question

a) x - 5 = 10
b) 3x - 8 = 2 - 4x
c) x + 4 = 10 - 5x
d) x – 3 = 9
e) 4x - 2 = 6 - 3x
f) x + 8 = 4 - 2x


equaçoes de 1 grau

Answer 1

Resposta:

OLÁ!!!

A)

$x - 5 = 10$

$x = 10 + 5$

$10 + 5$

$\boxed {\boxed {15}}$

B)

$2 - 4x + 8 = 4x + 10$

$3x = - 4x + 10$

$3x + 4x = 10$

$3x + 4x = 7x$

$7x = 10$

$\boxed {\boxed {x = \frac{10}{7} }}$

C)

$x = 10 - 5x - 4$

$10 - 5x - 4 = - 5x + 6$

$x = - 5x + 6$

$x + 5x = 6$

$x + 5x = 6x$

$6x = 6$

$\boxed {\boxed {1}}$

D)

$x = 9 + 3$

$9 + 3 = 12$

$\boxed {\boxed {x = 12}}$

E)

$4x = 6 - 3x + 2$

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

$4x = - 3x + 8$

$4x + 3 x = 8$

$4x + 3x = 7x$

$7x = 8$

$\boxed {\boxed {x = \frac{8}{7} }}$

F)

$x + 8 - 4 = - 2x$

$x + 8 - 4 = x + 4$

$x + 4 = - 2x$

$4 = - 2x - x$

$- 2x - x = - 3x$

$4 = - 3x$

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

$\boxed {\boxed {x = - \frac{4}{3} }}$