Question

15 b-3(2b+5) +2 (-5 b+7 )​

Answer 1

Ответ:

Ответ:-4.8

Пошаговое объяснение:

15b-3(2b+5)+(-5b+7) =

15b-6b-15-5b+7=

4b-8=

b=0.8

4*0.8-8=3.2-8 = -4.8

Пошаговое объяснение:

Думаю помог)

Answer 2

To simplify the expression 15b - 3(2b + 5) + 2(-5b + 7), you can use the distributive property and then combine like terms. Here's the step-by-step simplification:

1. Distribute the constants outside the parentheses to the terms inside: 15b - 6b - 15 + (-10b + 14)

2. Combine like terms: (15b - 6b - 10b) + (-15 + 14)

3. Further simplify each set of like terms: 15b - 16b + (-1)

4. Combine like terms one more time: -b - 1

So, the simplified expression is -b - 1.