Question

Calcule registrando e apresenta a solução para cada equação

a) 5=x+3

b)72=48+x

c)7=10+x

d)15=x+20

e) 0=x-18

f)-7=x+50

g)10x+1=4-5

h)5x-2=7+6

i)1.5=19

j)x/2=8

k)x/2=-8

l)2x/3=-10

Answer 1

a)5-3=x
x=2

b)72-48=x
x=24

c)7-10=x
x=-3

d)15-20=x
x=-5

e)-x=-18
x=18

f)-7-50=x
x=-75

g)10x+1=-1
10x=-1-1
x= -2/10
x= -1/5

h)5x-2=13
5x=13+2
5x=15
x=15/5
x=3

i)1.5=19
5=19 ??? faltou o x

j)x/2=8
x=8×2
x=16

k)x/2=-8
x=-8×2
x=-16

l)2x/3=-10
2x= -10×3
2x= -30
x=-30/2
x=-15