Question

Qual o valor de x:
a) x + 5 = 8
b) x - 4 = 3
c) x + 6 = 5
d) X - 7 = -7
e) x + 9 = -1
f) x - 39 = -79
g)10x + 1 = 21
h) 15x = 30
i) 4 = x - 10
j) 7 = x + 8
k) x - 1 = 5
1) 2x + 4 = 16
m) 3x = 15
n) 2x = 10
o) 3x = -9
p) 2x - 2 = 12
q) 3x - 13 = 8
r) 4x - 9 = 23
s) 7x - 33 = -12
t) 33+ x = 5
u) 2x = 14
v) 7x = -21
w) 4x = -12
x) 35x = -105​

Answer 1

Explicação passo-a-passo:

★ a) x + 5 = 8

x= 8-5

x= 3

★ b) x - 4 = 3

x= 3+4

x= 7

★ c) x + 6 = 5

x= 5-6

x= -1

★ d) X - 7 = -7

x= -7+7

x= {Ø}

★ e) x + 9 = -1

x= -1-9

x= -10

★ f) x - 39 = -79

x= -79+39

x= -40

★ g)10x + 1 = 21

10x= 21-1

10x= 20

x= 20/10

x= 2

★ h) 15x = 30

x= 30/15

x= 2

★ i) 4 = x - 10

4+10= x

x= 14

★ j) 7 = x + 8

7-8= x

x= -1

★ k) x - 1 = 5

x= 5+1

x= 6

★ l) 2x + 4 = 16

2x= 16-4

2x= 12

x= 12/2

x= 6

★ m) 3x = 15

x= 15/3

x= 5

★ n) 2x = 10

x= 10/2

x= 5

★ o) 3x = -9

x= -9/3

x= -3

★ p) 2x - 2 = 12

2x= 12+2

x= 14/2

x= 7

★ q) 3x - 13 = 8

3x= 8+13

3x= 21

x= 21/3

x= 7

★ r) 4x - 9 = 23

4x= 23+9

4x= 32

x= 32/4

x= 8

★ s) 7x - 33 = -12

7x= -12+33

7x= 21

x= 21/7

x= 3

★ t) 33+ x = 5

x= 5-33

x= -28

★ u) 2x = 14

x= 14/2

x= 7

★ v) 7x = -21

x= -21/7

x= -3

★ w) 4x = -12

x= -12/4

x= -3

★ x) 35x = -105

x= -105/35

x= -3