The above question can be written as,= 10x – 15 – 9x + 21 = 5
Now, find the value of x by considering the given equation,
= 10x – 15 – 9x + 21 = 5
= x + 6 = 5
Transposing 6 to RHS and it becomes -6
= x = 5 – 6
= x = -1
By substituting -1 in the place of x in given equation, we get
LHS,
= 10 (-1) -15 -9(-1) + 21
= -10 – 15 + 9 + 21
= -25 + 30
= 5
By comparing LHS and RHS
= 5 = 5
∴ LHS = RHS
Hence, the result is verified.
