Question

Найдите ошибки в решении уравнения и исправьте их: 1240 – ( x – 2780) = 3312 –2780 1240 – ( x – 2780) = 532 x – 2780 = 1240 + 532 x – 2780 = 1772 x = 1772 + 2780 x = 4552

Answer 1

1240 - х + 2780 = 532

-х = 532-1240-2780

-х = -3967

х = 3967

Answer 2

To find the errors in the solution and correct them, let's go step by step:

Original equation: 1240 - (x - 2780) = 3312 - 2780

Step 1: Distribute the negative sign inside the parentheses on the left side: 1240 - x + 2780 = 3312 - 2780

Step 2: Combine like terms on both sides of the equation: 4020 - x = 532

Step 3: Isolate the variable (x) on one side by adding x to both sides: 4020 - x + x = 532 + x

Step 4: Simplify the equation: 4020 = 532 + x

Step 5: Isolate the variable (x) on one side by subtracting 532 from both sides: 4020 - 532 = x

Step 6: Calculate the result: x = 3488

So, the correct value of x is 3488, not 4552 as originally calculated.