Question

resolva essas equações:
a) x+3=10
b) 2x+1=50
c) 3+x= 1
2 3

Answer 1

a)

x + 3 = 10 
x = 10 - 3
x = 7

===
b)

2x + 1 = 50
2x = 50 - 1
2x = 49
x = 49 /2

===
c)

3/2 + x/3 =  1 

2x + 9 / 6 = 1 . 6
2x + 9 = 6
2x = 6 - 9
2x = -3
x = -3 / 2

Answer 2

Olá,

a)

x+3 = 10
x = 10-3
x = 7

b)

2x+1 = 50
2x = 50-1
2x = 49
x = 49/2

c)

Caso seja 3/2+x = 1/3 teremos:

3/2+x = 1/3
x = 1/3-3/2
x = (2-9)/6
x = -7/6

Caso seja 3/2+x/3 = 1 teremos:

3/2+x/3 = 1
(9+2x)/6 = 1
9+2x = 6·(1)
9+2x = 6
2x = 6-9
2x = -3
x = -3/2