rozwiąż równania: 2a-3=a+1 4b+3=3b-4 7+3c=-5+2c

2a-3=a+1 2a-a=1+3 a=4 4b+3=3b-4 4b-3b=-4-3 b=-7 7+3c=-5+2c 3c-2c=-5-7 c=-12

2a-3=a+1 a=4 4b+3=3b-4 b=-7 7+3c=-5+2c c=-12

2a-3=a+1 2a -a = 1+3 1a = 4 //1 a= 4 4b+3=3b-4 4b-3b = -4 +3 1b=1 //1 b=1 7+3c=-5+2c 3c-2c=-5-7 1c=-12 //1 c=-12