Question

Раскрыть скобки 7(4а+6)-12 8х-4(16-2х) 3(у-2)-2(2у+3) 4(5х+2)+10(3-2х) 1,5(8х-6у)-2(5у-3х)

Answer 1

1)28a+42-12=28a+30

2)8x-64+8x=16x-64

3)3y-6-4y-6=-y-12

4)20x+8+30-20x=38

5)12x-9y-10y+6x=18x-19y

Answer 2

Sure, let's simplify the expressions by expanding and combining like terms. Here's the step-by-step solution for each expression:

1. 7(4a + 6) - 12 First, distribute the 7: = 28a + 42 - 12 = 28a + 30

2. 8x - 4(16 - 2x) First, distribute the -4: = 8x - (4 * 16) + (4 * 2x) = 8x - 64 + 8x Next, combine like terms: = 8x + 8x - 64 = 16x - 64

3. 3(y - 2) - 2(2y + 3) First, distribute the 3 and -2: = 3y - 6 - 4y - 6 Next, combine like terms: = 3y - 4y - 6 - 6 = -y - 12

4. 4(5x + 2) + 10(3 - 2x) First, distribute the 4 and 10: = 20x + 8 + 30 - 20x Next, combine like terms: = 20x - 20x + 8 + 30 = 8 + 30 = 38

5. 1.5(8x - 6y) - 2(5y - 3x) First, distribute the 1.5 and -2: = 12x - 9y - 10y + 6x Next, combine like terms: = 12x + 6x - 9y - 10y = 18x - 19y

I hope this helps! Let me know if you have any other questions.