Question

Сумма решений уравнений 3,3x+4,7=5,3 47x+33y=-133 равна

Answer 1

a) 41-7,08y=23,3

17.7-7.08y=0

y=-(-17.7)/7.08

y=17.7/7.08

y=2.5

Answer 2

To find the sum of the solutions to the system of equations, we first need to find the solutions for both equations.

1. Solve the first equation: 3.3x + 4.7 = 5.3

Subtract 4.7 from both sides: 3.3x = 5.3 - 4.7 3.3x = 0.6

Divide both sides by 3.3 to isolate x: x = 0.6 / 3.3 x ≈ 0.1818

2. Solve the second equation: 47x + 33y = -133

We already know the value of x from the first equation (x ≈ 0.1818), so substitute it into the second equation and solve for y:

47(0.1818) + 33y = -133

8.5454 + 33y = -133

Subtract 8.5454 from both sides:

33y = -133 - 8.5454

33y = -141.5454

Divide both sides by 33 to isolate y:

y = -141.5454 / 33 y ≈ -4.288

Now that we have found the values of x and y, we can calculate the sum of the solutions:

Sum = x + y ≈ 0.1818 + (-4.288) ≈ -4.1062

Therefore, the sum of the solutions to the system of equations is approximately -4.1062.