Given first the step you will use to separate the variable and then solve the equation:

(a) 3l = 42

(b)

(c)

(d) 4x = 25

(e) 8y = 36

(f)

(g)

(h) 20t = -10


The given parts of the question are solved below:


a. Here,


We have to separate the variables


Thus,


We have,


3l = 42


Dividing both sides by 3, we get,


Hence, l = 14


b. Here,


We have to separate the variables


We have,


Multiplying both sides by 2, we get


= 6 × 2


Hence,


This can be written as,


b = 12


c. Here,


We have to separate the variables


We have,


Multiplying both sides by 7, we get


×7 = 4 × 7


Hence, p = 28


d. Here,


We have to separate the variables


Thus,


We have,


4x = 25


Dividing both sides by 4, we get,


Hence, x =


e. Here,


We have to separate the variables


We have,


8y = 36


Dividing both sides by 8, we get,


Hence,


y =


f. Here,


We have to separate the variables


We have,


Multiplying both sides by 3, we get,


Hence, z =


g. Here,


We have to separate the variables


We have,


Multiplying both sides by 5, we get,


Hence, a =


h. Here,We have to separate the variables


We have,


20t = -10


Dividing both sides by 20, we get,


Hence,


t = - 1/2

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