Question

У:4=72-44 ××30=900:3 ××6=50+310

Answer 1

Ответ:

у:4=72-44

у:4=28

у=28×4

у=112

112:4=72-44

х×30=900:3

х×30=300

×=300:30

×=10

10×30=900:3

××6=50+310

××6=360

×=360:6

×=60

60×6=50+310

Answer 2

Let's break down the expression step by step:

1. 4 = 72 - 44 This is true, as 72 - 44 equals 28, so 4 equals 28.

2. 30 = 900 / 3 This is also true, as 900 divided by 3 equals 300, so 30 equals 300.

3. 6 = 50 + 310 This is not true, as 50 + 310 equals 360, not 6.

So, the overall expression is not valid because it contains an equation that is not true:

4 = 28 ×× 300 ×× 360

If you have any other questions or need further clarification, please feel free to ask.