Exercise 19 Page 85

To solve the equation we need to isolate w on one side of the equation. By adding 65 to both sides, we can cancel it from the right-hand side.

67=w-65

AddEqn

LHS+65=RHS+65

67+65=w-65+65

\AddTerm

112=w

RearrangeEqn

Rearrange equation

w=112

The solution to the equation is w=112. To check that we have the correct solution, we can substitute w=112 into the original equation and simplify.

67=w-65

Substitute

w= 112

67? = 112-65

SubTerms

Subtract terms

67=67

Since the left-hand side and right-hand side are equal, w=112 is a correct solution.