Question

CONSIDERE A ForçÃo Do 1°
GRAU f(x))=-3x+2, DETERMINE
OS VALORES DE X PARA QUE se tenha
A)F(x)=0 B)F(x)=11
C)F(x)=1/2​

Answer 1

A) -3x+2=0

-3x=-2

3x=2

x = $\frac{2}{3}$

B) -3x+2=11

-3x=11-2

-3x=9

x = $\frac{9}{-3}$

x = -3

C) -3x+2 = $\frac{1}{2}$

-3x = $\frac{1}{2}$ -2

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

-3x = - $\frac{3}{2}$

3x = $\frac{3}{2}$

x = $\frac{\frac{3}{2}}{3}$

x = $\frac{3}{2}.\frac{1}{3}$

x = $\frac{3}{6}$

x = $\frac{1}{2}$