resolva as questões
a) x+2=20
b)x-5=120
c)x+3=21
d)x+129=498
e)7+x=85
f)y-35=9
g)2.x=22
h)3.x=12
i)5.x=125
j)-2.x=-12
k)3x-16=5
l)2x-10=8
m)x-16+10=5
n)x-6+12=7
pfv me ajudem
Soluções para a tarefa
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Resposta:
a) x=20-2
x=18
b- x=120+5
x=125
c- x=21-3
x=18
d- x=498-129=369
e- x=85-7
x=78
f- y=9+35
y=44
g- x= 22/2
x= 11
h- x=12/3
x= 4
i- x= 125/5
x=25
j- .-2x= -12 *-1
2x= 12
x= 12/2
k. 3x= 5+16
3x=21
x= 21/3
x=7
l- 2x=8+10
2x= 18
x=18/2
x=9
m- x= 5+16-10
x=11
n- x=7+6-12
x=13-12
x= 1
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