Question

1)40+2х=3х-15 2)23,8у-80-24,3у=2

Answer 1

1) 40+2x=3x-15
2x-3x=-15-40
-1x=-55 | : (-1)
x=55

2) 23,8y-80-24,3y=2
23,8y-24,3y=2+80
-0,5y=82 | :(-0,5)
y = -164

Answer 2

Вот, думаю правильно.Ой, во 2 примере ответ -164.

Answer 3

To solve the equations, we'll find the values of the variables (x and y) that satisfy each equation.

1. 40 + 2x = 3x - 15

To solve for x, we need to isolate x on one side of the equation. Let's do that step by step:

Step 1: Move the terms with x to one side and the constants to the other side. 40 + 2x - 2x = 3x - 15 - 2x

Step 2: Simplify the equation. 40 = x - 15

Step 3: Isolate x by moving the constant term to the other side. x = 40 + 15 x = 55

So, the value of x that satisfies the equation is x = 55.

2. 23.8y - 80 - 24.3y = 2

Similarly, we'll solve for y by isolating y on one side of the equation:

Step 1: Combine like terms (terms with y) on the left side of the equation. 23.8y - 24.3y - 80 = 2

Step 2: Simplify the equation. -0.5y - 80 = 2

Step 3: Isolate y by moving the constant term to the other side. -0.5y = 2 + 80 -0.5y = 82

Step 4: Solve for y by dividing both sides by -0.5. y = 82 / -0.5 y = -164

So, the value of y that satisfies the equation is y = -164.