Question

rezolvati ecuatia:4x[26,5-3x(y-7,9x6,3)]+4,5=89,75

Answer 1

4x[26,5-3x(y-7,9x6,3)]+4,5=89,75

 4[26,5-3(y-7,9·6,3)]+4,5=89,75

4[26,5-3(y-49,77)]=89,75 -4,5

4(26,5-3y+3·49,77)=85,25

4(26,5-3y+149,31)=85,25

4·26,5-4·3y+4·149,31=85,25

106-12y+597,24=85,25

106+597,24-85,25=12y

617,99=12y

y=617,99:12

y=51,4991