Question

-4*(0,2y+2,7)+0,4*(14-y)=3,2с пошаговым решением даю 70 баллов​

Answer 1

$\displaystyle \tt -4\cdot(0,2y+2,7)+0,4\cdot(14-y)=3,2\\\displaystyle \tt -0,8y-10,8+5,6-0,4y=3,2\\\displaystyle \tt -1,2y-5,2=3,2\\\displaystyle \tt -1,2y=3,2+5,2\\\displaystyle \tt -1,2y=8,4\\\displaystyle \tt y=8,4\div(-1,2)\\\displaystyle \tt \bold{y=-7}$

Answer 2

-4(0,2у+2,7)+0,4(14-у)=3,2

-0,8у-10,8+5,6-0,4у=3,2

-1,2у=8,4

у=-7

Answer 3

To solve the equation step-by-step, we'll first distribute the multiplication and then combine like terms. Let's go through the process:

Given equation: -4*(0.2y + 2.7) + 0.4*(14 - y) = 3.2c

Step 1: Distribute the multiplication on both terms of the equation:

-4 * 0.2y - 4 * 2.7 + 0.4 * 14 - 0.4 * y = 3.2c

Step 2: Simplify each term:

-0.8y - 10.8 + 5.6 - 0.4y = 3.2c

Step 3: Combine like terms:

(-0.8y - 0.4y) + (-10.8 + 5.6) = 3.2c

Step 4: Continue simplifying:

-1.2y - 5.2 = 3.2c

Step 5: Isolate the variable term (y) on one side of the equation:

-1.2y = 3.2c + 5.2

Step 6: Divide both sides by -1.2 to solve for y:

y = (3.2c + 5.2) / -1.2

So, the solution for the equation is:

y = - (3.2c + 5.2) / 1.2

Now, to get 70 points, we need to check the answer with the given value of c. If you provide the value of c, I can help you verify the solution.