Question

Encontre o valor das incógnitas nas equações abaixo:
C)9×-4×=45
D)12×-18=6×+18
E)2×+3=13
F)2×+2=8×-10
G)×-109=5
H)2×-5=×+1
I)2×+3=×+4
J)3×-2=4×+9
K)4×-10=2×+2
L)4×-7=8×+2
M)9×+9+3×=15
N)16×-1=12×+3
O)3×-2-2×-3
P)×+28=11
Q)6×=2×+1216
R)2×-5=×+1216
S)5×+7=4×+10
T)17×-7×=×+18

Answer 1

c= 9x-4x=45
5x=45
x=9

d= 12x-18=6x+18
12x-6x=18+18
6x=36
x=6

e=2x+3=13
2x=13-3
2x=10
x=5

f=2x+2=8x-10
2x-8x= -10-2
-6x= -12   .(-1)
6x=12
x=2

g=x-105=5
x=5+105
x=110

h= 2x-5=x+1
2x-x=1+5
x=6

i=2x+3=x+4
2x-x=4-3
x=1

j= 3x-2=4x+9
3x-4x=9+2
-x=11  .(-1)
x=-11

k=4x-10=2x+2
4x-2x=2+10
2x=12
x=6

l= 4x-7=8x+2
4x-8x=2+7
-4x=9  .(-1)
4x=-9
x= -2.25

m= 9x+9+3x=15
12x=15-9
12x=6
x=0.5

n=16x-1=12x+3
16x-12x=3+1
4x=4
x=1

o=?

p= x+28=11
x=11-28
x=-17

q=6x=2x+1216
6x-2x=1216
4x=1216
x=304

r= 2x-5=x+1216
2x-x=1216+5
x=1221

s= 5x+7=4x+10
5x-4x=10-7
x=3

t= 17x-7x=x+18
10x-x=18
9x=18
x=2