Răspuns :
a)450
b)18691
c)700
d)20
e)4×-20-155=5
4×=180
×=45
(3×+5×)÷8=10
8×=80
×=10
g)540×-180×=360
360×=360
×=1
h)problema asta nu cred ca bine deoarece
ar fi
352×=1800
×=5.142
b)18691
c)700
d)20
e)4×-20-155=5
4×=180
×=45
(3×+5×)÷8=10
8×=80
×=10
g)540×-180×=360
360×=360
×=1
h)problema asta nu cred ca bine deoarece
ar fi
352×=1800
×=5.142
a) x+5273=5723
x=5723-5273
x=450
b) x-23542=42200
x=42200+23542
x=65742
c) (x+200):20=45
x+200=45x20
x+200=900
x=900-200
x=700
d) (320+x)x15=5100
320+x=5100:15
320+x=340
x=340-320
x=10
e) 4x-1000:560-620:4=5
4x-1000:560-620=5x4
4x-1000:560-620=20
4x-1000:560=20+620
4x-1000:560=640
4x-1000=640x560
4x-1000=358400
4x=358400+1000
4x=359400
x=359400:4
x=89850
f) (3x+5x):8=10
3x+5x=10x8
8x=80
x=80:8
x=8
g) 15x(36x-12x):120=3
15x(36x-12x)=3x120
15x36x-12x=360
36x-12x=360:15
24x=24
x=24:24
x=1
h) 7x(15x+35x):10+2x=185
7x(15x+35x)+2x=185x10
7x15x+35x+2x=1850
52x=7850:7
52x=1121
x=1121:52
x=21
x=5723-5273
x=450
b) x-23542=42200
x=42200+23542
x=65742
c) (x+200):20=45
x+200=45x20
x+200=900
x=900-200
x=700
d) (320+x)x15=5100
320+x=5100:15
320+x=340
x=340-320
x=10
e) 4x-1000:560-620:4=5
4x-1000:560-620=5x4
4x-1000:560-620=20
4x-1000:560=20+620
4x-1000:560=640
4x-1000=640x560
4x-1000=358400
4x=358400+1000
4x=359400
x=359400:4
x=89850
f) (3x+5x):8=10
3x+5x=10x8
8x=80
x=80:8
x=8
g) 15x(36x-12x):120=3
15x(36x-12x)=3x120
15x36x-12x=360
36x-12x=360:15
24x=24
x=24:24
x=1
h) 7x(15x+35x):10+2x=185
7x(15x+35x)+2x=185x10
7x15x+35x+2x=1850
52x=7850:7
52x=1121
x=1121:52
x=21