Question

1) 15+(-12+4,5) 2) (14,2-5)-(12,2-5)

Answer 1

Ответ:

1.=15-7.5=7.5

Пошаговое объяснение:

2.=9.2-7.2=2

Answer 2

1. To solve the expression 15+(-12+4.5), we need to perform the operations inside the parentheses first and then add the result to 15.

Inside the parentheses: -12 + 4.5 = -7.5

Now, we can add the result to 15: 15 + (-7.5) = 7.5

Therefore, 15 + (-12+4.5) equals 7.5.

2. To solve the expression (14.2-5) - (12.2-5), we need to perform the operations inside the parentheses first and then subtract the second result from the first.

Inside the first parentheses: 14.2 - 5 = 9.2

Inside the second parentheses: 12.2 - 5 = 7.2

Now, we can subtract the second result from the first: 9.2 - 7.2 = 2

Therefore, (14.2-5) - (12.2-5) equals 2.