Question

[(x+2^2 *3):17+2^2 *3^2*5:15]:3^3 +5=7

Answer 1

[(x+4 x3):17+4x9x5:15]:27+5=7

[(x+12):17+180:15]:27=7-5

[(x+12):17+12]:27=2

notam paranteza drepta cu a

a:27=2

a=27x2

a=54

inlocuim

(x+12):17+12=a adica =54

(x+12):17=54-12

x+12=42x17

x+12=714

x=714-12

x=702