Question

1)3 (5а + 4) − 11а; 2)−0,2 (4b − 7) + 1,4b;

Answer 1

пожалуйста вибирилучше ответ если помог

Answer 2

Let's simplify the expressions step by step:

1. 3(5a + 4) - 11a:

Start by distributing the 3 on the left side of the expression:

3 * 5a + 3 * 4 - 11a

Now, multiply each term inside the parentheses:

15a + 12 - 11a

Now, combine like terms by adding or subtracting the coefficients of 'a':

(15a - 11a) + 12

4a + 12

So, the simplified expression is 4a + 12.

2. -0.2(4b - 7) + 1.4b:

Start by distributing the -0.2 on the left side of the expression:

-0.2 * 4b + 0.2 * 7 + 1.4b

Now, multiply each term inside the parentheses:

-0.8b + 1.4b

Now, combine like terms by adding or subtracting the coefficients of 'b':

(-0.8b + 1.4b)

0.6b

So, the simplified expression is 0.6b.