Question

Daca 2x+2y+38=62 determinati4x+4y+27

Answer 1

$2x+2y+38=62 \\ 2x+2y=62-38 \\ 2x+2y=24 \\ 4x+4y=2*(2x+2y)=2*24=48 \\ 4x+4y+27=48+27=75$

Answer 2

2X + 2Y + 38 = 62
2x + 2y = 62 - 38
2x + 2y = 24
2 ( x + y ) = 24
x + y = 24 : 2
x + y = 12
vom da valori lui x si y asfel incat suma lor sa fie 12
x = 2 , y = 10
4 x 2 + 4 x 10 + 27 = 8 + 40 + 27 = 48 + 27 = 75
si putem lua asfel toate solutiile