What is 7-7*7+7?

What is the answer to 7-7*7+7?

7-7*7+7 = -35

Whenever you are dealing with any mathematical operation just remember “PEDMAS” and proceed accordingly.

P - Parenthesis

E - Exponents

D - Division

M - Multiplication

A - Addition

S - Subtraction

Using PEDMAS means that the order to solve an arithmetic expression is Parenthesis → Exponents → Addition / Subtraction  → Multiplication / Division.

We want to solve this expression: 7-7*7+7"?

In this case we don't have neither parenthesis nor exponents. So, “PEDMAS” we get:

7 - 7 × 7 + 7 = ?

= 7 - 49 + 7 (multiplication)

= 7 - 42 (addition)

= -35 (subtraction)

Thus,

7 - 7 × 7 + 7 = -35 (answer)

$${{=((2x+5)-13)((2x+5)+13) =(2x+5)^2-169}}$$