Zad.1
Rozwiąż równania:
a)3x+7=13
b)5a+2=-2a-7
c)-6x+4=-8x-6
d)2x-3+4x+5=-8+x
e)2(3x-1)=-6
Proszę was o rozwiązanie tego zadnia mam to na jutro bardzo was proszę zależy mi na dobrych wynikach i obliczeniach:))PLISSS!!
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a)3x+7=13
3x+7-13=0
3x-6=0
3x=6/ :3
x=2
b)5a+2=-2a-7
5a+2+2a+7=0
7a+9=0
7a=-9/ :7
a= -9/7
c)-6x+4=-8x-6
-6x+4+8x+6=0
2x+10=0
2x=-10/ :2
x= -5
d)2x-3+4x+5=-8+x
2x-3+4x+5+8-x=0
5x+10=0
5x=-10/ :5
x= -2
e)2(3x-1)=-6
2(3x-1)+6=0
6x-2+6=0
6x+4=0
6x=-4/:6
x= -4/6
a) 3x = 13-7
3x = 6/3
x = 2
b) 5a +2a = -7 -2
7a = -9/7
a = -9/7
a = -1 i 2/7
c) -6x + 8x = -6- 4
2x = - 10/2
x = - 5
d) 2x + 4x -x = -8 +3 - 5
5x = -10/5
x = -2
e) 6x - 2 = -6
6x = -6 +2
6x = -4/6
x = -4/6
x = -2/3