Rozwiąż równania a) 7x-6=6x+7 b) 1/3x+2=x c)-7(2x+1)=4 d) 8=6(x-1)-4x e)2(1-x)=6(2x-2) f)3-x/2+x+2/2=1/2 g) 1/4x-x-1/4=1/4 zad 2 rozwiąż równania podane w postaci proporcji a).x/2=5/6 b).x/2=x+1/4 PROSZĘ O POMOC Z OBLICZNIAMI DJAE MAX :D
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a) 7x-6=6x+7
7x-6x=7+6
x=13
b) 1/3x+2=x
1/3x-x=-2
-2/3x= -2 //(-2/3)
x= -2 :(-2/3)
x= -2 * (-3/2)
x= 3
c) -7(2x+1)=4
-14x-7=4
-14x=4+7 //(-14)
x= 11: (-14)
x= -11/14
d) 8=6(x-1)-4x
8=6x-6-4x
8=2x-6
-2x=-6-8
-2x=-14 //(-2)
x=7
e)2(1-x)=6(2x-2)
2-2x=12x-12
-2x-12x=-12-2
-14x=-14 //(-14)
x=1
f) 3-x/2+x+2/2=1/2
-1/2x+5=1/2
-1/2x=1/2-5
-1/2x=-4 1/2 //(-1/2)
x=-9/2 : (-1/2)
x=-9/2 *(-2)
x=9
g)1/4x-x-1/4=1/4
-3/4x=1/4+1/4
-3/4x=2/4//(-3/4)
x=2/4 : (-3/4)
x=2/4 * (-4/3)
x=-2/3
zad 2
a)x/2=5/6
2*5=x*6
10=6x//6
x= 10/6
x=5/3
x=1 2/3
b)
x/2=x+1/4
x/2-x=1/4
-x/2=1/4
-4x=2//(-4)
x=2 :(-4)
x=-1/2