Question

aflati numarul rational x stiind  ca x+1 supra  4  = 2x-1 supra  3

Answer 1

x+1/4 = 2x-1/3
4(2x-1)=3( x+1)
8x-4=3x+3
8x-3x=3+4
5x=7
x=7/5

Answer 2

( x + 1) / 4 = ( 2x - 1) 3
3( x + 1) = 4 ( 2x - 1),    se aplica teorema fundamentala a prop.
3x + 3 = 8x - 4
8x - 4 = 3x + 3
8x - 3x = 3 + 4
5x = 7
x = 7/5 , S = { 7/5}