гюйс

Verified answer

8а+19а -28а+3а=(8+19-28+3)а=2а
-4х+11х+35х-38х=(-4+11+35-38)х=4х
1,4a -a+b -2,6b=(1.4-1)a +(1-2.6)b=0.4a - 1.6b=0.4(a-4b)
1.6m -1.2 -3.1m+0.8=(1.6-3.1)m -(1.2-0.8)= -1.5m -0.4
1.1р+0,9d -1.2 -1.3p -3.8d=1.1p -1.3p+0.9d -3.8d -1.2= - 0.2p -2.9d -1.2

Ульяна5652 1)1а
2)4х
3)0.4а - 1.6б
4)-1.5м-0.4
5)-0.2р-2.9d-1.2