Question

Pomoc rozwiąż równania

5(x-6)+25=10

x-6x+1/2=1/3

2x-4=4x-14/7

x/6-x/4=x/2+7

Answer 1

Rozwiązania w załączniku.

Answer 2

5(x-6)+25=10
5x - 30 + 25 = 10
5x - 5 = 10
5x = 10 + 5
5x = 15
x = 3

x-6x+1/2=1/3
-5x = 1/3 - 1/2
-5x = 2/6 - 3/6
-5x = -1/6    I :(-5)
x = -1/6 * (-1/5)
x = 1/30

2x-4=(4x-14)/7
2x - 4 = 4/7x - 2
2x - 4/7x = -2 + 4
1 3/7x = 2 
10/7x = 2   I *7/10
x = 2 * 7/10
x = 7/5 = 1 2/5

x/6-x/4=x/2+7
2/12x - 3/12x - 6/12x = 7
-1/12x - 6/12x = 7
-7/12x = 7   I *(-12/7)
x = 7 * (-12/7) = -12