6.4 (2-3y)=6 (0.8y-1)+6.8

Question

6.4 (2-3y)=6 (0.8y-1)+6.8

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Answer 1

6.4 (2-3y)=6 (0.8y-1)+6.8
6.4*2-6.4*3y=6*0.8y-6+6.8
12.8-19.2y=4.8y+0.8
19.2y+4.8y=12.8-0.8
24y=12
y=12:24
y=0.5

5)-61.6

6) -3.5*(-2.8*5.5+4.3*3.7)-2.6=-3.5*(-15.4+15.91)-2.6=-3.5*0.51-2.6=-1.785-2.6= -4.385

Comments

а как можно прочитать 5 задание