kilka równań : 1.5x-12=3x+4 2.6x-18=2x+2 3.9x-8=3x+2 :)
kilka równań :
1.5x-12=3x+4
2.6x-18=2x+2
3.9x-8=3x+2
:)
5x-12=3x+4 obustronnie -3x +12 2x=16 x=8 6x-18=2x+2 obustronnie +18 -2x 4x= 20 x=5 9x-8=3x+2 obustronnie +8 -3x 6x= 10 x= 3/5 ;)
1.5x-12=3x+4 5x-3x=4+12 2x=16 x=8 2.6x-18=2x+2 6x-2x=2+18 4x=20 x=5 3.9x-8=3x+2 9x-3x=2+8 6x=10 x=5/3
1. 5x-12=3x+4 5x-3x=4+12 2x=16 /:2 x=8 2. 6x-18=2x+2 6x-2x=2+18 4x=20 /:4 x=5 3. 9x-8=3x+2 9x-3x=2+8 6x=10 /:6 x=10/6=5/3=1,(6)