Question

please slove these question in linear equation form:​

Answer 1

Question 1

3x + 12 = 4x + 4

3x - 4x = 4 - 12

-x = -8

or

x = 8

Question 2

5(3+x) = 9(3+2x)

15 + 5x = 27 + 18x

5x - 18x = 27-15

-13x = 12

x = -12/13

Question 3

15x/5 + 10x/3 = 13(2+x)

(45x+50x)/15 = 26 + 13x

95x/15 = 26+13x

95x = 15(26+13x)

95x = 390 + 195x

95x-195x = 390

-100x = 390

x = -390/100

x = -3.9

Question 4

15(6+x) + 4x = 9(2+3x) -2x

90 + 15x + 4x = 18 + 27x - 2x

90 + 19x = 18 + 25x

90-18 = 25x -19x

72 = 6x

6x = 72

x = 12

Question 5

4x/5 + 9x/3 = 2+3x

(12x+45x)/15 = 2+3x

57x/15 = 2+3x

57x = 15(2+3x)

57x = 30 + 45x

57x-45x = 30

12x = 30

x = 10/4

or

x = 2.5

Question 6

12(6x+3) = 7(2+x)

72x + 36 = 14 + 7x

72x - 7x = 14-36

65x = -22

x = -22/65

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