Question

resolva as esquaçoes
a) 7x + 5 = 68 - 2x
b) 3. (2x - 5) = 9-2X
c) a-3a + 5a = 12
d) 3. (x-1) = 6
e) 4. (x - 1)-2-(3x + 4) = 6​

Answer 1

Resposta:

a)7x+2x=68-5

9x=63

x=63/9

x=7

b)6x-15=9+2x

6x-2x=9+15

4x=25

x=24/4

x=6

c)3a=12

a=12/3

a=4

d)3x-3=6

3x=6+3

3x=9

x=9/3

x=3

e)4x-4-2-3x-4=6

4x-3x=6+4+2+4

x=16