Question

1) Resolva as equações:
a) �� + 5 = 8
b) �� − 39 = −79
c) 4 = �� – 10
d) 7�� − 33 = −12
e) 33+ �� = 5 – 3x
f) 35�� = −105
g) 2�� − 2 = 12 – 5x
h) 3(x + 3 ) – 5 = 22
i) 4(2m-1) + 3m = 2(4m-1) – (2 –m)
j) 5 (2x – 1 ) = 3 (x + 10)
k) 2(x + 5 ) – 4 = 26
l) 7y – 10 = y + 50
m) 2x – 10 + 7x + 10 = 180
n) 9x – 2 = 4x + 18
o) 3(3x +8) -5x = x – 3
p) 4(2x –1 ) = 3( x+2 )
q) 3(x + 2 ) – 1 = 2(x + 3) – 7
r) 7x + 1 = 5x – 7
s) 3(x + 1) + 2(2x – 3) = 5 (x – 1 ) + 8

Answer 1

Resposta:

da a ate a g não consegui entender

Explicação passo-a-passo:

h) 3x+9-5= 22

3x= 22-9+5

3x= 18

x= 18/3

x= 6

i) 8m-4+3m= 8m-2-4-2m

8m+3m -8m-2m= 4-2-4

1m= -2

m= -2

j) 10x-5= 3x+30

10x-3x= 5+30

7x= 35

x= 35/7

x= 5

k) 2x+10-4= 26

2x= 26-10+4

2x= 20

x=20/2

x= 10

l) 7y-y= 50+10

6y= 60

y= 60/10

y= 6

m) 9x= 180+10-10

9x=180

x= 180/90

x= 2

n) 9x-4x= 18+2

5x= 20

x= 20/5

x= 4

o) 9x+24-5x=x-3

9x-5x-x=-3-24

3x= -27

x= -27/3

x= -9

p) 8x-4= 3x+6

8x-3x= 6+4

5x=10

x= 10/5

x= 2

q) 3x+6-1= 2x+6-7

3x-2x= 6-7-6+1

1x= -6

r) 7x-5x= -7-1

2x= -8

x= -8/2

x= -4

s) 3x+3 + 4x-6= 5x-5+8

3x+4x-5x= -5+8-3+6

2x= 6

x= 6/2

x= 3