Question

Solve the equation by trial and error method:

$3m–14=4$

Answer 1

Given equation: $3m–14=4$

In the trial and error method, we have to put the values of the variable and check whether $LHS=RHS$.

$LHS=3m-14$

By substituting the value of $m=3$

$LHS=3m-14=3\times 3-14=9-14=-5$

$LHS\ne RHS$

By substituting the value of $m=4$

$LHS=3m-14=3\times 4-14=12-14=-2$

$LHS\ne RHS$

By substituting the value of $m=5$

$LHS=3m-14=3\times 5-14=15-14=1$

$LHS\ne RHS$

By substituting the value of $m=6$

$LHS=3m-14=3\times 6-14=18-14=4$

$LHS=RHS$

So $m=6$ is the solution of the given equation.