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Daca 4a + 5b + 2c = 88 si 4ax + 5bx + 2cx =352 determinati x. va rog

Răspuns :

4ax+5bx+2CX=352 =>x(4a+5b+2c) =352
                                        4a+5b+2c=88  => x=352/88 => x=4
4a+5b+2c=88
4ax+5bx+2cx=352
Metoda factorului comun:
x(4a+5b+2c)=352
88x=352
x=352:88
x=4
proba: 88x4=352