Question

Giúp..

Answer 1

a) x + 37 = 50

x = 50 - 37

x = 13

b) 2.x - 3 = 11

2.x = 11 + 3

2.x = 14

x = 14 : 2

x = 7

c) (2 + x) : 5 = 6

2 + x = 6 . 5

2 + x = 30

x = 30 - 2

x = 28

d) 2 + x : 5 = 6

x : 5 = 6 - 2

x : 5 = 4

x = 4 . 5

x = 20

e) 58 + 7x = 100

7x = 100 - 58

7x = 42

x = 42 : 7

x = 6

f) (x - 12) : 12 = 12

x - 12 = 12 . 12

x - 12 = 144

x = 144 + 12

x = 156

g) x - 56 : 4 = 16

x - 14 = 16

x = 16 + 14

x = 30

h) 101 + (36 - 4x) = 105

36 - 4x = 105 - 101

36 - 4x = 4

4x = 36 - 4

4x = 32

x = 32 : 4

x = 8

i) 2(x - 51) = 2.2³ + 20

2(x - 51) = 2.8 + 20

2(x - 51) = 16 + 20

2(x - 51) = 36

x - 51 = 36 : 2

x - 51 = 18

x = 18 + 51

x = 69

k) 10 - (x - 3) : 2 = 7² - 1¹⁰

10 - (x - 3) : 2 = 49 - 1

10 - (x - 3) : 2 = 48

(x - 3) : 2 = 10 - 48

(x - 3) : 2 = -38

x - 3 = -38 . 2

x - 3 = -76

x = -76 + 3

x = -73