Question

Resolva as equaçoes.

a)x/2=8

b)x/2=-8

c)3x/4=9

d)2x/3=-10

Answer 1

a)$\frac{1}{2} x= 8$
x=8/$\frac{1}{2}$
x=8×$\frac{2}{1}$
x=8×2
x=16

b)$\frac{1}{2} x= -8$
x=-8/$\frac{1}{2}$
x=-8×$\frac{2}{1}$
x=-8×2
x=-16

c)$\frac{3}{4} x=9$
x=9÷$\frac{3}{4}$
x=9×$\frac{4}{3}$
x=3×4
x=12

d)$\frac{2}{3}$x=-10
x=-10÷$\frac{2}{3}$
x=-10×$\frac{3}{2}$
x=-5×3
x=-15