Question

Resolva as equações a) -3+x=-9
B)x+5=0
C)2x=-144
D)6x=-15
E)4x-8=-8
F)3x+5=-10
G)4x-8=-2x+6
H)3(x-1)=-3(-2x+4)

Answer 1

a) -3+x=-9
x = -9+3
x = -6
B)x+5=0
x = 0 - 5
x = -5
C)2x=-144
x = -144/2
x = -72
D)6x=-15
x = -15/6
x = -2,5
E)4x-8=-8
4x = -8+8
4x = 0
x = 0/4
x = 0
F)3x+5=-10
3x = -10-5
3x = -15
x = -15/3
x = -5
G)4x-8=-2x+6
4x + 2x = 6 + 8
6x = 14
x = 14/6
x = 7/3
H)3(x-1)=-3(-2x+4)
3x -3 = +6x -12
3x - 6x = -12 + 3
-3x = -9 .(-1)
3x = 9
x = 9/3
x = 3

Answer 2

A)
-3+X=-9
X=-9+3
X=-6

B)
X+5=0
X=0-5
X=-5

C)
2X=-144
X=-144÷2
X=-72

D)6X=-15
X=-15÷(-6)
X=-2,5

E)
4X-8=-8
4X=-8+8
4X=0
X=0

F)
3X+5=-10
3X=-10-5
3X=-15
X=-15÷(-5)
X=-3

G)
4X-8=-2X+6
4X+2X=6+8
6X=14
X=14÷6
X=2,333...

H)
3(X-1)=-3(-2X+4)
3X-3=6X-12
12-3=-3X+6X
9=3X
X=9÷3
X=3

Espero ter ajudado :)