80% * 60 + 2x = 28*100 -4x Wyrażenia algebraiczne klasa 6 :)

80%*60+2x=28*100-4x 0,8*60+2x=2800-4x/+4x 48+6x=2800/-48 6x=2752/:6 x=459 wynik w zaokrągleniu

80% * 60 + 2x = 28 * 100 - 4x 0,8 * 60 + 2x = 2800 - 4x 48 + 2x = 2800 - 4x 2x + 4x = 2800 - 48 6x= 2752 x= 2752 : 6 x= 458 i 4/6 x = 458 i 2/3 spr. 80% * 60 + 2x = 28 * 100 - 4x L= 80% * 60 + 2x = 0,8 * 60 + 2 * 458 i 2/3= 48 + 2* 1376/3 = 48 + 2752/3= 48 + 917 i 1/3= 965 i 1/3 P= 28 * 100 - 4x= 2800 - 4* 458 i 2/3 = 2800 - 4*1376/3= 2800 - 5504/3= 2800 - 1834 i 2/3 = 965 i 1/3 L=P