Question

Resolva as equações: a)4x+8=3x5 B)3a-4=a+1 C)9y-11=-2 D)5x-1=8x+5

Answer 1

$a)$

$4x + 8 = 3x + 5$

$4x - 3x = 5 - 8$

$\red{x = - 3}$

$b)$

$3a-4=a+1$

$3a - a = 1 + 4$

$2a = 5$

$\red{a = \frac{5}{2}}$

$c)$

$9y-11=-2$

$9y = - 2 + 11$

$9y = 9$

$\red{y = 1}$

$d)$

$5x-1=8x+5$

$5x - 8x = 5 + 1$

$- 3x = 6$

$\red{x = - 2}$