Упростить:
16x+x-3x = 14х.
5a-3ab+8a = 13а-3аb=a(13-3b).
5x+6x+7y+8y = 11x+15y.
18xy+28xy-4 = 46xy - 4.
73c+29c+27c = 129c.
37a+42b-53c.
Решить уравнения:
7x=49. x = 49/7 = 7/
a-800=1000. a = 1000 + 800 = 1800.
2x+3x=10 . 5x = 10. x= 2.
100+y=300. y = 300 - 100 = 200.
18:c=1. c = 18.
376-z=0. z = 376.
Упростить:
16x+x-3x = 14х.
5a-3ab+8a = 13а-3аb=a(13-3b).
5x+6x+7y+8y = 11x+15y.
18xy+28xy-4 = 46xy - 4.
73c+29c+27c = 129c.
37a+42b-53c.
Решить уравнения:
7x=49. x = 49/7 = 7/
a-800=1000. a = 1000 + 800 = 1800.
2x+3x=10 . 5x = 10. x= 2.
100+y=300. y = 300 - 100 = 200.
18:c=1. c = 18.
376-z=0. z = 376.