Question

5)502-(217-x) = 421;6)871 -(x+157)=385.​

Answer 1

Ответ:

1)502-(217-x)=421

217-x=81

x=136

2)x+157=486

X=329

Answer 2

To solve these equations, let's start with the first one:

1. 502 - (217 - x) = 421

We can simplify the equation by removing the parentheses:

502 - 217 + x = 421

Next, let's simplify further:

285 + x = 421

To isolate the variable x, we can subtract 285 from both sides of the equation:

x = 421 - 285

x = 136

Therefore, the solution to the first equation is x = 136.

Now let's move on to the second equation:

2. 871 - (x + 157) = 385

Again, let's remove the parentheses:

871 - x - 157 = 385

Simplifying further:

714 - x = 385

To isolate x, subtract 714 from both sides:

-x = 385 - 714

-x = -329

To solve for x, we multiply both sides by -1 to change the sign:

x = 329

Thus, the solution to the second equation is x = 329.