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100
v/2=8
v = 16
100
15 + b = 23
b = 8
100

x + 5 = 10

x = 5

100

v/4 + 2 = -2

v = -16

100

What are the four basic mathematical operations?

addition, subtraction, multiplication, and division 

200
−15x = 0
x = 0
200
x − 7 = 13
x = 20
200

a - 10 = -5

a= 5

200

−6 = n/2 − 10

What is 8

200
x/5 = -40
x = -200
300
−126 = 14k
k = -9
300
m − 9 = −13
m = -4
300

14 = 2f

f = 7

300
3 - 9v = 12
v = -1
300

What does it mean to solve for a variable?

find the value of the variable 

what does "x" equal 

400
m/4 = -13
m = -52
400
−17 = x − 15
x = -2
400

m/3 = 8

m = 24

400
−6 + x/4 = −5
x = 4
400

Would this answer be negative or positive? 


 -10 -5

Negative 


-10 - 5 =-15

500
−17x = −204
x = 12
500
-2 + x = 8
x = 10
500

16 = y - 2 

y = 18

500

9x − 7 = −7

x = 0
500

Would this answer be negative or positive?

-24/-3

Postive 

-24/-3 = 8 

2 negatives make a positive