Question

Помогите пж решить пример.☆☆☆2х+3=х-63,2-5а= -1,8а+40,8х-3,5= -1,2х+0,58,6х-3,7=7,6х-5НАЙДИТЕ КОРНИ УРАВНЕНИЙ!!!)))Срочноооо!!!!

Answer 1

1)2x+3-x+6=0
x+9=0
x=-9
2)3.2-5a+1.8a-4=0
-0.8-3.2a=0
-0.8=3.2a
a=-0.25
3)0.8x-3.5+1.2x-0.5=0
2x-4=0
2x=4
x=2
4)8.6x-3.7-7.6x+5=0
x+1.3=0
x=-1.3

Answer 2

Equation 1: 2x + 3 = x - 6

To solve this equation, we need to isolate the variable x on one side of the equation. Let's go step by step:

1. Start by subtracting x from both sides of the equation: 2x - x + 3 = x - x - 6 x + 3 = -6

2. Next, subtract 3 from both sides of the equation: x + 3 - 3 = -6 - 3 x = -9

Therefore, the solution to Equation 1 is x = -9.

Equation 2: 2.5a - 5a = -1.8a + 40.8

To solve this equation, we need to combine like terms and isolate the variable a on one side of the equation. Let's go step by step:

1. Start by combining like terms on both sides of the equation: -2.5a - (-1.8a) = 40.8 - 5a -2.5a + 1.8a = 40.8 - 5a -0.7a = 40.8 - 5a

2. Next, simplify the equation by adding 5a to both sides: -0.7a + 5a = 40.8 - 5a + 5a 4.3a = 40.8

3. Finally, divide both sides of the equation by 4.3 to solve for a: a = 40.8 / 4.3 a ≈ 9.49

Therefore, the solution to Equation 2 is a ≈ 9.49.

Equation 3: 8.6x - 3.7 = 7.6x - 5

To solve this equation, we need to isolate the variable x on one side of the equation. Let's go step by step:

1. Start by subtracting 7.6x from both sides of the equation: 8.6x - 7.6x - 3.7 = 7.6x - 7.6x - 5 1x - 3.7 = -5

2. Next, add 3.7 to both sides of the equation: 1x - 3.7 + 3.7 = -5 + 3.7 1x = -1.3

Therefore, the solution to Equation 3 is x = -1.3.

Please note that these solutions are based on the equations you provided. Double-check your calculations to ensure accuracy.