matematyka z plusem s. 199 z. 8
rozwiąż równania :
a. 4x-3= 3x+5
b. 5x +2= 7-3x
c. 3(x-1 )= 0
d. -6(x+1)= 24
e. -7(x-2)= 3x-1
f. 4(x-1)= 6(1+x)
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a. x=8
b. x=1,6
c. 3x-3=0
x=1
d. -6x-6=24
x=5
e. -7x+14=3x-1
-10x=-15
x=1,5
f. 4x-4=6+6x
-2x=10
x=-5
powinno pyć dobrze
a) 4x-3=3x+5
4x-3x=3+5
x=8
b)5x+2=7-3x
5x+3x=7-2
8x=5/8
x=5/8
c)3(x-1 )= 0
3x-3=0
3x=3/3
x=1
d) -6(x+1)= 24
-6x-6=24
-6x=24+6
-6x=30/ -6
x=-5
e) -7(x-2)= 3x-1
-7x+14=3x-1
-7x-3x=-1-14
-10x=-15/-10
x=15/10
f) 4(x-1)= 6(1+x)
4x-4=6+6x
4x-6x=6+4
-2x=10/-2
x=-5