Question

1) 3(x-7)+5x 2)5(4-3x)+8x3)(y-4)*2+10y4)(2y+5)*4-11y5) 4x+2(0,5x+3)6)6x-3(x-7).​

Answer 1

3(x-7)+5x = 3x-21+5x=8x-21
5(4-3x)+8x = 20-15x+8x=20-7x
(y-4)*2+10y = 2y-8+10y=12y-8
(2y+5)*4-11y = 8y+20-11y=-3y+20=20-3y
4x+2(0,5x+3) = 4x+x+6=5x+6
6x-3(x-7) = 6x-3x+21=3x+21=3(x+7)

Answer 2

Я так понял, что уравнения равны нулю. вот значения переменных в таком случае

Answer 3

Let's simplify each of the given expressions:

1. 3(x-7) + 5x = 3x - 21 + 5x (Distribute the 3 into the parentheses) = 8x - 21 (Combine like terms)

2. 5(4-3x) + 8x = 20 - 15x + 8x (Distribute the 5 into the parentheses) = 20 - 7x (Combine like terms)

3. (3)(y-4)*2 + 10y = 6(y-4) + 10y (Multiply 3 by 2) = 6y - 24 + 10y (Distribute the 6) = 16y - 24 (Combine like terms)

4. (4)(2y+5)*4 - 11y = 8y + 20 - 11y (Multiply 4 by 4) = -3y + 20 (Combine like terms)

5. 4x + 2(0.5x+3) = 4x + x + 6 (Distribute the 2 into the parentheses) = 5x + 6 (Combine like terms)

6. 6x - 3(x-7) = 6x - 3x + 21 (Distribute the -3 into the parentheses) = 3x + 21 (Combine like terms)

These are the simplified forms of the given expressions.