(6-2х)+(15-3х) при х=0,2

Question

(6-2х)+(15-3х) при х=0,2

Answer 1

(6-2*0,2)+(15-3*0,2) =(6-0,4)+(15-0,6)=5,6+14,4=20 

Answer 2

(6-(2*0,2))+(15-(3*0.2))=(6-(2/5)) + (15-(3/5))= 28/5+72/5=100/5=20