Упростите выражение
1)-0.8a*0.45b*(-c)
2) m(-0.75n)*(-0.6r)
3) 3(1.6x-0.7y)-1.8x+0.1y
4) -5(0.9m-1.1n)-1.5m+1.9n
CРОЧНО
1)-0.8a*0.45b*(-c)
2) m(-0.75n)*(-0.6r)
3) 3(1.6x-0.7y)-1.8x+0.1y
4) -5(0.9m-1.1n)-1.5m+1.9n
CРОЧНО
More Questions From This User See All
Answers & Comments
Verified answer
1) (0,8 * 0,45)аbc = 0,36abc (-) * (-) = (+)2) (0,75 * 0,6)mnr = 0,45mnr (-) * (-) = (+)
3) = 4,8x - 2,1y - 1,8x + 0,1y = (4,8x - 1,8x) - (2,1y - 0,1y) = 3x - 2y
4) = - 4,5m + 5,5n - 1,5m + 1,9n = (5,5n + 1,9n) - (4,5m + 1,5m) = 7,4n - 6m