Question

1) 2(3-5c)+1=4(1-c)____2)8-y=2*(7+y)_____3) -3(2x+1)=8x+25 ____4) (5x+7)*3=61-10x

Answer 1

Пиши,если не понятно

Answer 2

Let's solve each equation step-by-step:

1. 2(3 - 5c) + 1 = 4(1 - c)

Step 1: Distribute the multiplication on both sides. 6 - 10c + 1 = 4 - 4c

Step 2: Combine like terms. 7 - 10c = 4 - 4c

Step 3: Move all the c terms to one side of the equation and the constant terms to the other side. -10c + 4c = 4 - 7

Step 4: Combine like terms again. -6c = -3

Step 5: Solve for c by dividing both sides by -6. c = (-3) / (-6)

c = 1/2

So, the solution to the equation is c = 1/2.

2. 8 - y = 2 * (7 + y)

Step 1: Distribute the multiplication on the right side. 8 - y = 14 + 2y

Step 2: Move all the y terms to one side of the equation and the constant terms to the other side.

• y - 2y = 14 - 8

Step 3: Combine like terms. -3y = 6

Step 4: Solve for y by dividing both sides by -3. y = 6 / (-3)

y = -2

So, the solution to the equation is y = -2.

3. -3(2x + 1) = 8x + 25

Step 1: Distribute the multiplication on the left side. -6x - 3 = 8x + 25

Step 2: Move all the x terms to one side of the equation and the constant terms to the other side. -6x - 8x = 25 + 3

Step 3: Combine like terms. -14x = 28

Step 4: Solve for x by dividing both sides by -14. x = 28 / (-14)

x = -2

So, the solution to the equation is x = -2.

4. (5x + 7) * 3 = 61 - 10x

Step 1: Distribute the multiplication on the left side. 15x + 21 = 61 - 10x

Step 2: Move all the x terms to one side of the equation and the constant terms to the other side. 15x + 10x = 61 - 21

Step 3: Combine like terms. 25x = 40

Step 4: Solve for x by dividing both sides by 25. x = 40 / 25

x = 8/5

So, the solution to the equation is x = 8/5 or 1.6.