Question

Determinati nr natural ,,x''.Verificati a) 37+[25(x-4)]=54 b)60-[42+(14-x)]=12 c) 8+[12-(x+9)]+8 d) 13+[7-(3-+x)]=15

Answer 1

a)25(x-4)=17 X-4=17/25 X=117/25 B)42+(14-x)=48 56-x=48 X=8 C)12=x+9 X=3 D)5=3-+x Nu stiu ce semn este....rezolvi tu mai departe