Solving Equations and Simplifying Expressions 7th Grade

Two-Step Equations

1

6x – 13 = 11

x= 4

2

3x + 5 = 14

x= 3

3

x/2 + 5 = 3

x= -4

4

7 - x/2 = -1

x= 16

5

2/3x - 5 = - 3

x= 3

Mixed Equations

1

Solving Equations

x - 2 = 6

x = 8

2

Solving Equations

5p + 1 = 6

p = 1

3

Solving Equations

2n+10 = 14

n = 2

4

Solving Equations

2(5m-3) = 14

m = 2

5

Solving Equations

3𝑥 − 9 + 7x -1 = 10

x = 2

Addition and Subtraction Equations with fractions and decimals

1

Solving Equations

x + 3 =4.5

x = 1.5

2

Solving Equations

x - 45.6= 92.4 

x = 138

3

Solving Equations

49= 3x + 4x

x = 7

4

Solving Equations

14 = a + 6.7 + 2

a= 5.3

5

Solving Equations

21 = k - 9.7

k = 30.7

Equations multiplication and division

1

3/4x = 24

x = 32

2

1.2x = 144 

x = 120

3

7.88=3.4x + 2.1

x = 1.7

4

2/5x+7 = -3

x = -25

5

(3x - 5)/2=-13

x=-7

Simplifying Expressions

1

6x+3+x

7x+3

2

12x+4-3x+7

9x+11

3

3(3x-6)

9x-18

4

5+2(3x+1)

6x+7

5

9-4(2x-3)+7x

-x+21