Question

1) Resolva as seguintes equações:
a) X - 10 = 20
b) x+8 = -3
c) X + 13 = 0
d) 2x + 15 = 5
e) 3x-6 = 1
f) -5x - 1 = -11
g) -x + 16 = 3
h) -10x + 6 = 1
i) 4X - 10 = 2x - 6
i) 2x + 5 = 8 - 5x
k) 5x-1 = 3x
1) 4x=-12​

Answer 1

a) X - 10 = 20

x = 20 + 10

x = 30

b) x+8 = -3

x = -3 - 8

x = -11

c) X + 13 = 0

x = -13

d) 2x + 15 = 5

2x = 5 - 15

2x = -10

x = -10/2

x = -5

e) 3x-6 = 1

3x = 1 + 6

3x = 7

x = 7/3

f) -5x - 1 = -11

11 - 1 = 5x

10 = 5x

10/5 = x

x = 2

g) -x + 16 = 3

16 - 3 = x

x = 13

h) -10x + 6 = 1

6 - 1 = 10x

5 = 10x

x = 5/10

x = 1/2

i) 4X - 10 = 2x - 6

4x - 2x = -6 + 10

2x = 4

x = 4/2

x = 2

i) 2x + 5 = 8 - 5x

2x + 5x = 8 - 5

7x = 3

x = 3/7

k) 5x-1 = 3x

5x - 3x = 1

2x = 1

x = 1/2

1) 4x=-12​

x = -12/4

x = -3