Question

Sravni uravnenia i reshi i ih: x:20=360,x*20=360,30*x=210,30+x=210,8120-x=40,8120:x=40.

Answer 1

1. х*20=360
х=360÷20
х=18

2. 30*х=210
х=210÷30
х=7

3. 30+х=210
х=210-30
х=180

4. 8120-х=40
х=8120-40
х=8080

5. 8120÷х=40
х=8120÷40
х=203

Answer 2

Sure, let's solve the equations one by one:

1. x/20 = 360 To solve for x, we can multiply both sides of the equation by 20: x = 360 * 20 x = 7200

2. x * 20 = 360 To solve for x, we can divide both sides of the equation by 20: x = 360 / 20 x = 18

3. 30 * x = 210 To solve for x, we can divide both sides of the equation by 30: x = 210 / 30 x = 7

4. 30 + x = 210 To solve for x, we can subtract 30 from both sides of the equation: x = 210 - 30 x = 180

5. 8120 - x = 40 To solve for x, we can subtract 40 from both sides of the equation: x = 8120 - 40 x = 8080

6. 8120 / x = 40 To solve for x, we can divide both sides of the equation by 40: x = 8120 / 40 x = 203

So, the solutions for the respective equations are:

1. x = 7200
2. x = 18
3. x = 7
4. x = 180
5. x = 8080
6. x = 203