Question

rezolvati N ecuatiile

a) 7x+12=89
b)x:11-3=11
c)3(x+5)=15
d)(63-x):6=9

Answer 1

a) 7x=77=>x=11
b)x:11=14=>x=14*11=>x=154
c)x+5=15:3
    x+5=5
    x=0
d)63-x=54
   x=9