Question

CALCULE AS EQUAÇÕES:

a) 18 x 43=65

b)23x -16 = 14-17x

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

d) 2x+6=x+18

e)5x -3=2x+ 9

f) 3(2x-3) + 2(x + 1) = 3 x +
g) 3x-5=X-2

h) 3 x -5 = 13

i ) 3 x +5=2 ​


U

Answer 1

A= 1

8x - 43= 65
18x= 65+43
18x= 108/18
X= 6

B= 23x - 17x= 14+16
40x= 30
X= 30/40
X= 3/4

C= 10y-5-5y= 6y-6-20
10y-5y-6y= -6-20+5
-y= -21 (-1)
Y=21

D= 2x-x= 18-6
X= 12

E= 5x-2x= 9+3
3x=12
X= 12/3
X= 4

G= 3x-x= -2+5
2x= 3
X=3/2

H= 3x= 13+5
3x=18
X= 18/3
X= 6

I= 3x= 2-5
3x= -3
X= -3/3
X= -1