Question

resolva as equações
(a) x+2=10
(b)x-6=8
(c) 3x-21=0
(d) 6+x=6,4

Answer 1

a) x=8
b)x=14
C)x=7
d)x=0,4

Answer 2

a) x + 2 =10
x=10 - 2
x= 8

b) x-6=8
x=6+ 8
x= 14

c) 3x - 21 =0
3x=21
x= 21/3
x= 7

d)6+x=6,4
x=-6  +6,4
x=0,4