Question

1) (8x-15)*0,4-2,2x-23 2) 25*(4a-3b) +5*(15b-2a) ​

Answer 1

Ответ:

1)3,2x-6-2,2x-23=x-29

2)100a-75b+75b-10a=90a

Пошаговое объяснение:

Answer 2

Let's simplify the given expressions step by step:

1. $(8x - 15) \times 0.4 - 2.2x - 23$:

First, distribute the multiplication and simplify: $(8x - 15) \times 0.4 = 3.2x - 6$

Now, substitute this back into the original expression and simplify further: $3.2x - 6 - 2.2x - 23 = 1x - 29$

2. $25 \times (4a - 3b) + 5 \times (15b - 2a)$:

First, distribute the multiplications and simplify: $25 \times 4a - 25 \times 3b + 5 \times 15b - 5 \times 2a$ $= 100a - 75b + 75b - 10a$

Now, combine like terms: $= 90a - 10a$ $= 80a$

So, the simplified expressions are:

1. $1x - 29$
2. $80a$