Question

Упростите выражения
а)5x+3(2a-7)
b)6a-4(5a+1)
c)3x-y-6x+8y
d)5m-2n+2.3-6m+5.7n-9.4
v)8a+(3a-5)-(2a+1)

Answer 1

a)5x+3(2a-7)
5x+6a-21
b)6a-4(5a+1)
6a-20a-4
-14a-4
c)3x-y-6x+8y
-3x+7y
d)5m-2n+2,3-6m+5,7n-9,4
-m+3,7n-7,1
v)8a+(3a-5)-(2a+1)
8a+3a-5-2a-1
9a-6

Answer 2

1.5x+6a-21
2.4-14a
3.7y-3x
4.3.7n-m-7.1
5.9a-4