Question

Spuneti si mie aflati numarul nat x stiind ca 2×(x+7)-14=28

Answer 1

2*(x+7)-14=28     2x+14  -14=28    2x+0=28    x=28/2    x=14

Answer 2

2x(X+7)-14=28
2x(X+7)=28-14
2x(X+7)=14
x+7=14:2
x+7=7
x=7-7
x=0