Tìm x

1224 : [119 - (x - 6)] = 24

• 74

• 64

• 54

• 44

Answer explanation

1224 : [119 - (x - 6) = 24

119 - (x - 6) = 1224 : 24

119 - (x - 6) = 51

x - 6 = 119-51

x - 6 = 68

x = 68 + 6

x 74

137 - 15x = 2

• 7

• 8

• 9

• 10

Answer explanation

137 - 15x = 2

15x = 137 - 2

15x = 135

x = 135 : 15

x = 9

(x - 35) - 120 = 0

• 165

• 155

• 145

• 135

Answer explanation

(x - 35) - 120 = 0

x - 35 = 0 + 120

x - 35 = 120

x = 120 + 35

x = 155

2x + 1x - 4 = 11

• 2

• 3

• 4

• 5

Answer explanation

2x + 1x - 4 = 11

(2 + 1)x - 4 = 11

3x - 4 = 11

3x = 11 + 4

3x = 15

x = 15 : 3

x = 5

7(x - 3) = 21

• 6

• 7

• 8

• 9

Answer explanation

7(x - 3) = 21

x - 3 = 21 : 7

x - 3 = 3

x = 3 + 3

x = 6

4(x - 25) = 420

• 120

• 130

• 140

• 150

Answer explanation

4(x - 25) = 420

x - 25 = 420 : 4

x - 25 = 105

x = 105 +25

x = 130

8x + 36 : 12 = 27

• 1

• 2

• 3

• 4

Answer explanation

8x + 36 : 12 = 27

8x + 3 = 27

8x = 27 - 3

8x = 24

x = 24 : 8

x = 3

(4x - 5) + 17 = 32

• 4

• 5

• 6

• 7

Answer explanation

(4x - 5) + 17 = 32

4x - 5 = 32 - 17

4x - 5 = 15

4x = 15 + 5

4x = 20

x = 20 : 4

x = 5

(x - 15) - 75 = 0

• 90

• 80

• 100

• 100 - 10

Answer explanation

(x - 15) - 75 = 0

x - 15 = 0 + 75

x - 15 = 75

x = 75 + 15

x = 90

x : [(1800 + 600) : 30] = 560 : (315 - 35)

• 180

• 170

• 160

• 150

Answer explanation