Question

Resolva as equaçoes
a) 5x+x=16
b)x+x+8=55
c)7x-2-5x=18
d)12x-10x-4=3
e)-x-2x-4=11
f)8x=5x+4,5
g)4(x+1)=12
h)4(3-x)-4x=18
i)9x-3(2x+2)=15
j)2,5(x-2)-1,5x=1
k)3,5x+8=2(x+7)

Obs: pffffffv respondam hj e com a conta quem coloca a conta dou mais 20 ponto

Answer 1

Resolva as equaçoes

a) 5x+x=16==> 6x = 16 ==> x = 16/6

b)x+xC8=55==> 2x = 55-8==> x = 47/2

c)7x-2-5x=18==> 2x=18+2==> x = 10

d)12x-10x-4=3==>2x=3+4==>x=7/2

e)-x-2x-4=11==> -3x=11+4==>-3x=15(-1)==>3x=15==>x=5

f)8x=5x+4,5==>8x-5x=4,5==>3x=4,5==>x = 1,5

g)4(x+1)=12==>4x+4=12==>4x=12-4==>4x=8==>x=2

h)4(3-x)-4x=18==>12-4x-4x=18==>-8x=18-12
                 - 8x=6(-1)==>8x= -6==> x = - 6/8

i)9x-3(2x+2)=15==>9x-6x-6=15==>3x=15+6==>3x=21==>x=7

j)2,5(x-2)-1,5x=1==>2,5x-5-1,5x=1==>1x=1+5==>x=6

k)3,5x+8=2(x+7)==>3,5x=2x+14-8==>3,5x-2x=6==>1,5x=6==>x=40