Answer:
range = 9
Step-by-step explanation:
The range is the difference between the largest and smallest values
largest value = 12
smallest value = 3
range = 12 - 3 = 9
Answer:
a) x = 10
b) x = -40
c) x = 10, -40
Step-by-step explanation:
a)

Taking 10 to the right hand side 10 becomes positive

So x = 10
b)

Taking 20 to the right hand side 20 becomes negative

Multiplying both sides by 2

So, x = -40
c)

Hence, x = 10, -40
So, two solutions can be provided
Simplify the fraction and you should get a bunch of multiplex linear equations with solving for y multi step problems of the fraction