Упростите выражения 1. 3.7x+2.5y+1.6x+4.8y 2. 4.5m+1.9n+3.3m+4.3n

Question

Упростите выражения
1. 3.7x+2.5y+1.6x+4.8y
2. 4.5m+1.9n+3.3m+4.3n

Answer 1

1. 3.7х+1.6х+2.5у+4.8у=5.3х+7.3
2.4.5m+3.3m+1.9n+4.3n= 7.8m+6.2n
Вроде бы так 

Answer 2

1. 3.7x+2.5y+1.6x+4.8y= 5.3х + 7.3у
2. 4.5m+1.9n+3.3m+4.3n= 7.8m + 6.2n