Question

resolva as equações a seguir::

a)18x-43=65

b)23x-16=14-17x

c) 10y-5(1+y)=3(2y-2)-20

Answer 1

a) 18x= 65+43
18x=108
x= 108/18
x=6

b) 23x - 16 = 14 - 17x
23x+17x=14+16
40x=30
x = 30/40
x=3/4

c) 10y -5(1+y) = 3(2y-2) - 20
10y -5 -5y = 6y -6 -20
10y -5y -6y = -20 -6 +5
-y =  -21 (-1)
y=21

Answer 2

a)18x-43=65

18x= 65 + 43

18x = 108

x= 108/18

x= 6

b)23x-16=14-17x

23x + 17x = 14 + 16

40x = 30

x= 30/40 (÷10)

x= 3/4

c) 10y-5(1+y)=3(2y-2)-20

10y - 5 - 5y = 6y - 6 - 20

5y - 5 = 6y - 26

5y - 6y = - 26 + 5

- y = - 21 (-1)

y= 21