Show:
Miscellaneous
Two-Step Equations
Two-Step Equation w/ parentheses
Two-Step Equation with decimals
Two-Step Equation with fractions
100
A letter used to represent an unknown number
What is a variable?
100

2k + 5 = 17

k=6

100

3(a - 5) = 12

a = 9

100

0.4(m + 4) = 12

m = 26

100

1/6(w - 8) = 2

w = 20

200
The opposite of addition
What is subtraction?
200

2a + 11 = 35

a=12

200

5(m + 7) = 55

m = 4

200

-0.8(y + 24) = 44

y = -79

200

2/5(d + 6) = 15 

d = 24

300
The four basic operations
What are addition, subtraction, multiplication, and division?
300

4r + 39 = 55

r = 4

300

-6(k - 5) = 54

k = -4

300

0.2(x +15) = 3.5

x = 2.5

300

-2/3(z - 14) = 8

z = 2

400
A number right in front of a variable
What is a coefficient?
400

-12s + 27 = 171

s = -12

400

4(j + 32) = 28

j = -25

400

-1.2(x - 3.7) = 12.6

x = -6.8

400

4/5(y + 18) = 32

y = 22

500

Which method am I using?

5(x + 3) = 20

5x + 15 = 20

5x = 5

x = 1

Method 2

500

16b + 518 = 742

b = 14

500

-21(q + 3) = -63

q = -5
500

0.3(w + 59) = 16.8

w = -3

500

-8/3(g + 83) = 64

g = -107