Răspunsuri

2014-10-09T21:36:35+03:00
2*{12+3[60-3(-16))}-5*x=7
2*[12+3(60+48)]-5*x=7
2*(12+3*108)-5*x=7
2*(12+324)-5*x=7
2*336-5*x=7
672-5x=7
-5x=7-672
-5x=-665
x=-665/-5
x=133
2014-10-09T21:41:29+03:00
2x[12+3(60-3x(-16)]-5*x=7

2*[12+3(60+48)]-5*x=7

2 *(12+3*108)-5*x=7

2*336-5*x=7

672-5*x=7

5*x=672-7

5*x=662 

x=662:5

x=132 rest 12