Question

AFLA VALOAREA LUI X DIN EGALITATILE DE MAI JOS ,APOI VERIFICA .
A . DOI ORI PARANTEZA PATRATA 10 PLUS 10 ORI PARANTEZA ROTUNDA 6 PLUS 2 ORI X INCHIZI PARATEZA ROTUNDA SI CEA PATRATA EGAL CU 300

Answer 1

2*[10+10*(6+2*x)]=300
10+10*(6+2*x)=300:2
10+10*(6+2*x)=150
10*(6+2*x)=150-10
10*(6+2*x)=140
6+2*x=140:10
6+2*x=14
2*x=14-6
2*x=8
x=8:2
x=4