Question

Номер 794 !!!ПОМОГИТЕ ПОЖАЛУЙСТА! !!!!

Answer 1

1) 0,3x+0.8y+1.5x+1.2y=1.8x+2y
2)4.2x+5.3y-2.6y-1.8x=2.4x+2.7y
3) 1.5a+9.7b+5.8a-1.3b=7.3a+8.4b
4) 12.75a+1.85b-9.55a+3.5b=3.2a+5.35b