Question

Приведите подобные слагаемые1)8b+12b-21b+b

Answer 1

Подобные слагаемые- это слагаемые с одним и тем же неизвестным. В данной случае это b.
Имеем: 8+12+1-21=0

Answer 2

1)8b+12b-21b+b=(8 + 12 - 21 + 1)*b = 0*b = 0

Answer 3

I can help you with math problems.

To simplify the expression, you need to add or subtract the coefficients of the same variable. A coefficient is a number that is multiplied by a variable. For example, in 8b, the coefficient is 8 and the variable is b.

The expression has four terms: 8b, 12b, -21b, and b. All of them have the same variable b, so they are like terms. To combine them, you need to add or subtract their coefficients. For example, 8 + 12 - 21 + 1 = 0.

Therefore, the simplified expression is $$0b$$ or just $$0$$.

Some additional information or tips are:

- You can use the distributive property to simplify expressions with parentheses. For example, $$2(b + 3) = 2b + 6$$. - You can use the commutative and associative properties to rearrange the order and grouping of the terms. For example, $$8b + 12b - 21b + b = (8b + b) + (12b - 21b) = 9b - 9b = 0b$$. - You can check your answer by substituting a value for the variable and evaluating both sides of the equation. For example, if $$b = 2$$, then $$8b + 12b - 21b + b = 8(2) + 12(2) - 21(2) + 2 = 0$$ and $$0b = 0(2) = 0$$.