Упрастить выражение

Question

Упрастить выражение

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Answer 1

№1.
0.3(1.2х-0.5у)-1.5(0.4у+у) = 0.36х-0.15у-0.6х-1.5у = -0.24х-1.65у

Comments

№2.
-2.4(2.5а-1.5б)+0.5(1.8б+5.6а)=-1.2(2.5х-1.5у)+0.5*(1.8у+5.6х)=

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№2.
-2.4(2.5а-1.5б)+0.5(1.8б+5.6а)=
-0.1(60а-36б - 9б-28а)=
-0.1*(32а-45б)=
16а-22.5б

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№3.
-1.8(3.5м-5)-6,5(0,8-0,4м)=
-0.1*(63.м-90+52-26м)=
-0,1(37м-38)