Question

1-encontre o valor da expressão:
a) X+9-X=(X=2)
b) 6-x+2+x= (X=3)
c)X-8+7+X= (X=2)
d) 5-x+x+x+2= (x=5)
e) 10+x= (x=9)
f) x-7+2= (X=10)
g) 5-x-4=(x=1)
h) x+x-10= (x=6)
i)x-x+5= (x=7)
j)x=3= (x=7)




Ajudem ai, pfvrr​

Answer 1

Resposta:

a) X+9-X=(X=2)
2 + 9 - 2 = 9
b) 6-x+2+x= (X=3)
6 - 3 + 2 + 3 = 6 + 2 = 8
c) X-8+7+X= (X=2)
2 - 8 + 7 + 2 = 11 - 8 = 3
d) 5-x+x+x+2= (x=5)
5 - 5 + 5 + 5 + 2 = 15 - 5 + 2 = 12
e) 10+x= (x=9)
10 + 9 = 19

f) x-7+2= (X=10)

10 - 7 + 2 = 3 + 2 = 5
g) 5-x-4=(x=1)
5 - 1 - 4 = 5 - 5 = 0
h) x+x-10= (x=6)
6 + 6 - 10 = 12 - 10 = 2

i)x-x+5= (x=7)
7 - 7 + 5 = 0 + 5 = 5

j)x=3= (x=7)
caso o = seja +
7 + 3 = 10
caso o = seja -
7 - 3 = 4