3. Solving Equations and combining like terms

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3x + 2x = 10

x = 2

6x - 4x + 3x = 100

x = 20

5 ( 2x + 3) = 45

x = 3

x + 5x - 6 = 30

x = 4

5 ( x + 2) = 35

x = 5

x + 5x - 6 = 30

x = 6

10x + 4 - 6x = 32

x = 7

4 ( x + 3) + x = 47

x = 7

-8= -1(2x + 4)

x=2

Write an equation, then solve. Mr. Two brought in cookies for his class. He gave out half of them in the morning. At lunch, he gave out 14 more. He then have 8 cookies left. How many cookies did he start with?

x=44

x = 31

96 = 6(x - 15)

x = 3

-12 = 3 - 2x - 3x

x = 6

-24 = -3 (x + 2)

x = 5

-3 (4x - 8) = -36

x = -9

-4 (x + 3) = 24

x = 10

-8 = 1.3x - 2.1x

x = -14

-8(x + 9) = 40

x = -12

-8x - 5x + 7x = 72

x = -7

24 = 6 (-x - 3)

x = 0

3 = x + 3 − 5x

x = 8

4 - 2x + 3 = -9

x = 2

4x - 2x = 4

x = -1

6(x - 2) = -18

x = -5

75 = 3(-6x - 5)

x = -6

x + 3 - 3 = -6

-18 + 3(5x - 2) + 8 = -1

x = -1

2 + 3(x + 2) = 3

x = -1

2 + 3(x + 2) = 5

x = -1

-2(3x + 10) = 40

x = -10

2(3x + 6x) = -36

x = -2

-10 + 7x +24 - 2x = -20

x = -6.4

12x + 3x + 2x + 3x = 20

x = 1

6 ( 3 + 2x) = 30

x = 1

2 ( x + 10) = 40

x = 10


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