Question

intr-o cutie sint x grame de bomboane ,iar in alta - de 3 ori mai multe.Ce semnifica scrierea :
a) x+3x=800
b) 3x-x=400
c) 3x-200=x+200 ???

va rog sa si rezolvati ecuatiile
am nevoie URGENTTTTT

Answer 1

x+3x=800
scrierea semnifica datele problemei
4x=800
x=800:4
x=200
3x-x=400
2x=400
x=400:2
x=200
3x-200=x+200
3x-x=200+200
2x=400
x=400:2
x=200

Answer 2

a) x+3x=800
 4x=800
 x=800:4
 x=200
Răspuns: {200}

b) 3x-x=400
 2x=400
 x=400:2
 x=200
Răspuns: {200}

c) 3x-200=x+200
3x-x=200+200
2x=400
x=400:2
x=200
Răspuns: {200}