Question

Уравнения:1)(x+20):5=6   2)a:10=960:2  3)2400:(c-12)=10   4)12+x=72:2

Answer 1

1)(x+20):5=6
х+20=6*5
х+20=30
х=30-20
х=10

проверка:(10+20):5=6

2)а:10=960
а=960*10
а=9600

проверка:9600:10=960

Answer 2

3) 2400:(с-12)=10
с-12=2400:10
с-12=240
с=240+12
С=262
4)12+х=72:12
12+x=36
x=36-12
x=24

Answer 3

1. (x+20)/5 = 6 Multiplying both sides by 5: x+20 = 30 Subtracting 20 from both sides: x = 10

Therefore, the solution to the first equation is x = 10.

2. a/10 = 960/2 Multiplying both sides by 10: a = 4800/2 a = 2400

Therefore, the solution to the second equation is a = 2400.

3. 2400/(c-12) = 10 Multiplying both sides by (c-12): 2400 = 10(c-12) Distributing 10: 2400 = 10c - 120 Adding 120 to both sides: 2520 = 10c Dividing both sides by 10: c = 252

Therefore, the solution to the third equation is c = 252.

4. 12+x = 72/2 Simplifying the right side: 12+x = 36 Subtracting 12 from both sides: x = 24

Therefore, the solution to the fourth equation is x = 24.