1.Rozwiąż równanie : 1) 8a + 4 = 36 2) 8/9k + 1/3 = 3 3) 6b - 3 = -9 4) -3/4 - 1/4l = 2,25

1) 8a + 4 = 36 8a=36-4 8a=32 a=32/8=4 a=4 2) 8/9k + 1/3 = 3 8/9k= 3-1/3 8/9k=9/3-1/3 8/9k=8/3 k=(8/3)/(8/9)=72/24=36/12=18/6=9/3=3 k=3 3) 6b - 3 = -9 6b = -9+3 6b= -6 b= -1 4) -3/4 - 1/4l = 2,25 -1/4l=(2+1/4)+3/4 -1/4l=2+1 0,25l=-3 l=-12

1) 8a + 4 = 36 8a=32/8 a=4 2) 8/9k + 1/3 = 3 8/9k=2 2/3 /8/9 k=3 3) 6b - 3 = -9 6b=-6 /6 b=-1 4) -3/4 - 1/4l = 2,25 -0,75 - 0,25l=2,25 -0,25l=3 /-0,25 l=-12