State true or false
$( - 3) - 7 = - 10$
A.True
B.False

Hint: Take the left hand side of the given expression, and simplify the expression and compare the resultant value with the right hand side of the expression and justify the expression whether it is true or false. If the left hand side of the equation is equal to the right hand side of the equation, then the given statement is true.

Complete step-by-step answer:
Take LHS (left hand side) $ = ( - 3) - 7$
Open the brackets in the above expression –
LHS $ = - 3 - 7$
When you combine two terms with the same sign you have to add the terms and give that common sign to the resultant value.
LHS$ = - 10$
The above expression is equal to the right hand side of the given equation.
Therefore, from the given multiple choices – the option A is the correct answer.
So, the correct answer is “Option A”.

Note: When you combine two negative terms, add terms and give negative signs to the resultant value. Remember the basic mathematical operations while simplifying. When you combine one negative and one positive term then subtract the terms and give the sign of the bigger number to the resultant value.