Question

resolva as equações

a) 3x-7-20
b)2x+9-16
c)2x+x/3=14

Answer 1

$a) = 3x - 7 -20$

$3x = 7 + 20$

$x = \frac{27}{3}$

$x = 7$

$b) 2x + 9 - 16$

$2x = -9 + 16$

$x = \frac{7}{2}$

$c) 2x + \frac{x}{3} = 14$

$2x + x = 14*3$

$3x = 42$

$x = \frac{42}{3}$

$x = 14$