Question

Раскройте скобки и приведите подобные слагаемые a)9b-5b+3b b)3m*8a c)3(1,5x-7)+5x ​ РАСПИШИТЕ ПОЖАЛУЙСТА ​

Answer 1

$\displaystyle 1)9b-5b+3b=(9-5+3)b=7b\\\\2)3m*8a=24ma=24am\\\\3)3(1,5x-7)+5x=4,5x-21+5x=9,5x-21$

Answer 2

a) 9b - 5b + 3b + b

To simplify the expression and combine like terms, we first need to add or subtract the coefficients of the variables with the same exponent.

In this case, we have the variables "b" with coefficients of 9, -5, 3, and 1.

Adding the coefficients together, we get: 9b - 5b + 3b + b = (9 - 5 + 3 + 1)b = 8b

Therefore, the simplified expression is 8b.

b) 3m * 8a + c

In this expression, we have two terms: 3m * 8a and c.

The term 3m * 8a represents the product of 3m and 8a. To simplify this, we can multiply the coefficients and combine the variables: 3m * 8a = 24ma

So the first term simplifies to 24ma.

The second term, c, does not have any like terms to combine with. Therefore, it remains as c.

Putting it all together, the simplified expression is: 3m * 8a + c = 24ma + c

c) 3(1.5x - 7) + 5x

In this expression, we have two terms: 3(1.5x - 7) and 5x.

The first term, 3(1.5x - 7), can be simplified by distributing the 3 to both terms inside the parentheses: 3(1.5x - 7) = 3 * 1.5x - 3 * 7 = 4.5x - 21

The second term, 5x, does not have any like terms to combine with.

Putting it all together, the simplified expression is: 3(1.5x - 7) + 5x = 4.5x - 21 + 5x = 9.5x - 21