Question

Resolva as equações
Por favor me ajudem

Answer 1

a)x+2=10 x=10-2 x=8
b)x-6=-8 x=-8+6 x=-2
c)3x-21=0 3x=21 x=21/3 x=7
d)6+x=6.4 x=6.4-6 x=0.4
f)4x+3=-19 4x=-19-3 4x=-22 x=-22/4 x=-5.5
j)2(3x-5)=14 6x-10=14 6x=14+10 6x=24 x=24/6 x=4

Answer 2

a) x+2=10
×=10-2
×=8

b) x-6= -8
x= -8 +6
x= -2

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

d) 6+x= 6,4
x= 6,4 -6
x= 0,4

f) 4x+3=-19
4x= -19 -3
4x=-22
x= -22/4
x= -5,5

j) 2 (3x-5)=14
6x- 10=14
6x= 14 +10
6x= 24
x=24/6
x=4