0.6(4х-3)+2.1(х-5)=
2.5(4а-8b)-(3a-4b)*1.4=
-(-5.2-3.1t)-(2.4t-6.4)=

0.6(4х-3)+2.1(х-5)=2,4х-1,8+2,1х-10,5= 4,5х-12,32.5(4а-8b)-(3a-4b)*1.4=10а-20b-4,2a+5,6b=5,8а-14,4-(-5.2-3.1t)-(2.4t-6.4)=5,2+3,1t-2,4t+6,4= 0,7t+11,6

1) 0,6(4x-3)+2,1(x-5)=0. 2,4x-1,8+2,1x-10,52,4x+2,1x=1,8+10,54,5x=12,32) 2,5(4a-8b)-(3a-4b)×1,4=010a-20b-4,2a+5,6b10a-4,2a=20b-5,6b5,8a=14,4b3) -(-5,2-3,1t)-(2,4t-6,4)=05,2+3,1t+2,4t+6,43,1t+2,4t=-5,2-6,45,5t=-11,6