Question

70 + 20 - 30 x 45 - 15​

Answer 1

Пошаговое объяснение:

1)30*45 =1350

2)70+20=90

3)90-1350= -1260

4)-1260-15=-1275

Answer 2

To solve this mathematical expression, you need to follow the order of operations, which is often remembered using the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction). According to PEMDAS, you should perform multiplication and division before addition and subtraction. Here's how you would solve the expression step by step:

1. Calculate the multiplication: -30 x 45 = -1350
2. Now, you have: 70 + 20 - 1350 - 15
3. Calculate the addition and subtraction from left to right: 70 + 20 = 90, then 90 - 1350 = -1260, finally -1260 - 15 = -1275

So, the result of the expression is -1275.