10p+10=100
⇒ 10p + 10 - 10 = 100 -10 (Subtracting 10 from both sides of the equation.)
⇒ 10p = 90
⇒10p10=9010 (dividing both sides by 10)
⇒ p = 9
Verification:
Substitute 9 back in 'p' in original equation.
LHS= (10 × 9) +10 = 90+10 = 100 = RHS