Question

Solve the following algebraic expressions by both trial and error method and balancing equation.
$t+11=30$

Answer 1

Given $t+11=30$

Let $t=1,LHS=1+11=12,RHS=30$

$LHS\ne RHS$

Let $t=19,LHS=19+11=30,RHS=30$

As $LHS=RHS$

By trial and error method

So $t=19$

By balancing equation method

$t+11=30⟹t=30-11=19$