Question

решите уравнения срочно! 3
y=y+2 , 2,6*12=1,6x , 5x-8=4-7x , 7k+7=11+5k

Answer 1

3y=y+2
3y-y=2
2y=2
y=1

2.6*12=1.6x
31.2=1.6x
-1.6x=-31.2
x=19.5

5x-8=4-7x
5x+7x=4+8
12x=12
x=1

7k+7=11+5k
7k-5k=11-7
2k=4
k=2