Question

77/800=7,7/у+53; Найдите у из пропорций

Answer 1

Решение задания смотри на фотографии

Answer 2

To find the value of у in the proportion, we need to solve the equation:

77/800 = 7.7/у + 53

To isolate у, we'll perform the following steps:

Step 1: Subtract 53 from both sides of the equation: 77/800 - 53 = 7.7/у

Step 2: Simplify the left side: 77/800 - 53 = (77 - 53*800)/800 77/800 - 53 = (77 - 42400)/800 77/800 - 53 = -42323/800

Step 3: Invert both sides of the equation (flip the fractions): 800/-42323 = у/7.7

Step 4: Solve for у by cross-multiplying: 800 * у = -42323 * 7.7

Step 5: Divide both sides by 800 to find the value of у: у = (-42323 * 7.7) / 800

Now, let's calculate у:

у = (-325851.1) / 800 у ≈ -407.31375

So, the value of у in the given proportion is approximately -407.31375.