Question

Решите уравнения:4,2*0,8-х=4,2 (ответ: -0,84)Решите уравнения:-у-1 2/3=2 1/6 (ответ: -3 5/6)Заранее спасибо.

Answer 1

3.36-x=4.2
-x=-4.2+3.36
x= -4.2+3.36
x=-0.84

-y=2 1/6+1 2/3
-y=3 1+4/6
y= -3 5/6

Answer 2

Solving the Equations:

1. Equation 1: 4.2*0.8 - x = 4.2 - To solve for x, we can first calculate the left-hand side of the equation, which is 4.2*0.8, and then subtract it from 4.2.

Calculation: - 4.2*0.8 = 3.36 - 4.2 - 3.36 = 0.84

Therefore, the solution to the equation 4.2*0.8 - x = 4.2 is x = -0.84.

[[SOURCE #1]] [[SOURCE #2]]

2. Equation 2: -y - 1 + 2/3 = 2 + 1/6 - To solve for y, we can first simplify the equation by adding 1 to both sides and then solving for y.

Calculation: - -y - 1 + 2/3 = 2 + 1/6 - -y + 2/3 = 3 + 1/6 - -y = 3 + 1/6 - 2/3 - -y = 18/6 + 1/6 - 4/6 - -y = 15/6 - y = -15/6 - y = -2.5

Therefore, the solution to the equation -y - 1 + 2/3 = 2 + 1/6 is y = -2.5.

[[SOURCE #3]]