Question

(8,5-у)*72=3744. 6,9х-4,9х+19,2=20,25.

Answer 1

Ответ:

1)у=-43,5.

2)х=0,525.

Пошаговое объяснение:

1)(8,5-у)*72=3744;

612-72у=3744;

-72у=3132;

у=3132/-72;

у=-43,5.

2)6,9х-4,9х+19,2=20,25;

2х=1,05;

х=0,525.

Answer 2

To solve these equations, we'll first need to simplify and then isolate the variables.

1. Equation 1: (8 - 5y) * 72 = 3744

Step 1: Distribute the 72 on the left side: 576 - 360y = 3744

Step 2: Move the constant term to the right side: -360y = 3744 - 576 -360y = 3168

Step 3: Divide by -360 to solve for y: y = 3168 / -360 y = -8.8

So the value of y is -8.8.

2. Equation 2: 6.9x - 4.9x + 19.2 = 20.25

Step 1: Combine like terms on the left side: (6.9 - 4.9)x + 19.2 = 20.25 2x + 19.2 = 20.25

Step 2: Move the constant term to the right side: 2x = 20.25 - 19.2 2x = 1.05

Step 3: Divide by 2 to solve for x: x = 1.05 / 2 x = 0.525

So the value of x is 0.525.

Therefore, the solutions to the equations are: y = -8.8 x = 0.525