Question

IMI TREBUIE URGENT!!
3×{10+2×[40-2×(28-3×5)]}-7x=51​

Answer 1

Răspuns:

x=9

Explicație pas cu pas:

3*{10+2*[40-2*(28-15)]}-7x=51

3*[10+2*(40-2*13)]-7x=51

3*[10+2*(40-26)]-7x=51

3*(10+2*14)-7x=51

3*(10+28)-7x=51

3*38-7x=51

114-7x=51

7x=114-51

7x=63

x=63:7

x=9