OBLICZ:
A) 3X-2[5(X-1)-4]=4(7-3X)
B) 4-(X+3)(X+2)=X(1-X)
C) 6[2-3(2X-5)]-5(1-2X)=7-2(11X-5)


A)
3X-2[5(X-1)-4]=4(7-3X)
3X-2(5X-5-4)=28-12X
3X-2(5X-9)=28-12X
3X-10X+18="28-12X -7X+18="28-12X -7X+12X="28-18 5X="10" /:5
X="2


B)
4-(X+3)(X+2)=X(1-X)
4-(X²+2X+3X+6)=X-X²
4-X²-2X-3X-6="X-X2
-X²-5X-X+X²=-4+6
-6X="2" /:(-6)
X="2/-6 X="-1/3


C)
6[2-3(2X-5)]-5(1-2X)=7-2(11X-5)
6(2-6X+15)-5+10X="7-22X+10 12-36X+90-5+10X="17-22X -36X+10X+22X="-12-90+5+17 -4X="-80" /:(-4)
X="20