1.

Give the steps you will use to separate the variables and then solve the equation : – 5 + 3x = 16

Answer»

Given – 5 + 3x = 16 

⇒ – 5 + 3x + 5 = 16 + 5 (Add 5 on both sides) 

⇒ 3x = 21

⇒ 3x/3 = 21/3 (Divide by 3 on both sides)

⇒ x = 7

Check: 

Substitute x = 7 in the given equation 

LHS = – 5 + 3x 

= – 5 + 3(7) 

= – 5 + 21 = 16 = RHS 

Hence verified.



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