Question

resolva as equaçoes a)x/3=7

b)x/4=-3

c2x/5=4

d)2x/3=-10

Answer 1

a) x/3 = 7 ----- x = 7 . 3 ----- x = 21

b) x/4 = - 3 --- x = - 3 . 4 ------ x = - 12

c) 2x/5 = 4 ----- 2x = 4 . 5 ------ 2x = 20 ---- x = 20/2 ---- x = 10

d) 2x/3 = -10 ----- 2x = - 10 . 3----- 2x = - 30 ----- x = - 30/2 ---- x = - 15

Answer 2

a) x/3 = 7
x/3 = 7/3
x = 21

b) x/4 = - 3

x/4 = - 3/4
x = - 12
c) 2x/5 = 4
2x/5 = 4/5
2x = 20
x = 20/2
x = 10
d) 2x/3 = - 10
2x/3 = - 10/3
2x = - 30
x = - 30/2
x = - 15