Question

Rozwiąż równanie:
a) 6b-3=9
b)-3\4 - 1\4l=2,25
c)-2,5c-8=17
d)0,4m-2=-6

potrzebne na teraz!!!

Answer 1

A) 6b-3=9_______/+3
6b=12_______/:6
b=2

b)-3\4 - 1\4l=2,25/*100
-75-25l=225_____/+75
-25l=300________/:(-25)
l=-12

c)-2,5c-8=17_______/*10
-25c-80=170_______/+80
-25c=250________/:(-25)
c=10

d)0,4m-2=-6______/*10
4m-20=-60______/+20
4m=-40_________/:4
m=-10

Answer 2

A) 6b-3=9 / +3
6b = 12 /:6
b=2

b)-3\4 - 1\4l=2,25 / +3/4
-1/4l = 3 /* -1
0,25l = -3 /0,25
l=-12

c)-2,5c-8=17 / +8
-2,5c = 25 / : -2,5
c = -10

d)0,4m-2=-6 /+2
0,4m = -4 /: 0,4
m = -10

Answer 3

A) 6b-3=9
6b=9+3
6b=12||:6
b=2

b)-3\4 - 1\4l=2,25 |4
-3-l=9
-l=9+3
-l=12|(-1)
l=-12

c)-2,5c-8=17
-2,5c=17-8
-2,5c=9 ||:(-2,5)
c=3,6

d)0,4m-2=-6
0,4m=-6+2
0,4m=-4||:0,4
m=-10