Question

раскройте скобки и упростите 1)15x-(6x-12y) 2)4.6a+(9.7b-5.6a) 3)2(x+4)+3(15-4x)

Answer 1

1. 15x-(6x-12y)=15x-6x+12y=9х+12y=3*(3x+4y) 2. 4.6а+(9.7b-5.6a)=4.6a+9.7b-5.6a=

Answer 2

1) 15х-(6х-12у)=15х-6х+12у=9х+12у

2)4,6а+(9,7b-5.6a)=4.6a+9.7b-5.6a=-1.6a+9.7b

3)2(х+4)+3(15-4х)=2х+8+45-12х=-10х+53