Evaluate

If a negative sign or a subtraction symbol appears outside parentheses, remove the parentheses and change the sign of every term within the parentheses

Rewrite the expression

Since two opposites add up to 0,remove them form the expression

Calculate

Apply the distributive property

Any expression multiplied by 1 remains the same

Evaluate

Collect like terms by calculating the sum or difference of their coefficients

Subtract the numbers