For this case we must solve the following expression:
[tex]-11 (-7)[/tex]
By law of multiplication of signs we have to:
[tex]- * - =+\\- * + = -\\+ * - = -\\+ * + =+[/tex]
Also we must find the product of 11 and 7, this is equivalent to:
[tex]11+ 11+ 11+ 11 +11+ 11 + 11 = 77[/tex]
Thus, the result of the expression is +77.
Answer:
[tex]-11 (-7) = 77[/tex]
