Question

Cum se face:
1 pe 4 din x = 7,5

Answer 1

$\frac{1}{4} x=7,5 \\ \\ x=7,5*4 \\ \\ x=30$

Answer 2

1/4 din x=7,5;
(1/4)•x=7,5;
7,5=75/10=15/2;
x/4=15/2;
2•x=4•15;
2x=60;
x=60/2;
=>x=30;