Question

Resolva as equações abaixo:a) -4x=8b) 3x+17=19c) 2x-1=x - 10d) 4(2x-5) = 3-(-2x+1)e) x/4 +2 = x-3/2 f) 4/5 + x/2 = x/3 -1g) x+3=2 (x- 1/2)h) 3(x-4)/9 -1 = x -4-x/6OBS : O / SIGNIFICA FRAÇÃO.ME AJUDEM POR FAVOR

Answer 1

a)-4x=8
x=-8/4
x=-2

b)3x+17=19
3x=19-17
3x=3
x=3/3
x=1

c)2x-1=x-10
2x-x=-10+1
x=-9

d)4(2x-5)=3-(-2x+1)
8x-29=3+2x+1
8x-20=4+2x
8x-2x=4+20
6x=24
x=24/6
x=4

e)x/4+2=x-3/2
x+8/4=2x-3/2
2(x+8)=4(2x-3)
2x+16=8X-12
2X-8X=-12-16
-6X=-28
X=28/6(÷2)
X=14/6
X=4,66

f)4/5+x/2=x/3-1
8+5x/10=x-3/3
3(8+5x)=10(x-3)
24+15x= 10x-30
15x-10x=-30-24
5x=-54
x-54/5
x=-20,89

g)x+3=2(x-1/2)
x+3=2x-2/2
x+3=2x-1
x-2x=-1-3
-x=-4(-1)
x=4

h)3(x-4)/9-1 =x-4-x/60
3x-12/8=c-4-x/60
60(3x-12)=8(x-4-x)
180x-720=8x-32-8x
180x-720=-32
180x=-32+720
180x=688
x=688/180(÷2)
x=345/90(÷2)
x=172/45
x=3,82