Question

1- resolva cada equação a seguir

A) 2 3x-1=16

B)2 -2x+4=16x-1

C) 8 2-3x=32x-1

D)27 4x-3=81

É) 9 2x-5=243

F) 2x =64

G) 10x=1000

H) 3 x-2=9

I) 9 x=243

J) 2 3x+1=4x-2

Answer 1

a) 23x - 1 = 16
23x = 16 + 1
23x = 17
x = 17/23
x = 0,73913043

b)2 - 2x + 4 = 16x - 1
2x - 16x = - 1 - 4 - 2
-14x = 3 - 2
-14x= 1
x = 1/-14
x= -0,0714285

c) 82 - 3x = 32x - 1
3x - 32x = -1-82
-29x = 81
x=81/-29
x = -2,7931039

d) 274x - 3 = 81
274x = 81 + 3
274x = 84
x = 84/274
x = 0,3065693

e) 92x -5= 243
92x = 243 + 5
92x= 248
x=248/92
x=2,6956521

f) 2x = 64
x = 64 - 2
x= 62

g) 10x = 1000
x = 1000 - 10
x =990

h) 3x - 2 = 9
3x = 9 + 2
3x = 11
x = 11/3
x = 3.6666666

i)9x = 243
x = 243 - 9
x =234

j) 23x + 1 = 4x - 2
23x - 4x = -2-1
-19x = 1
x= 1/-19
x= 0,0526315