1)7(0.5a+1)+1.5a-9a=-0.8

Question

1)7(0.5a+1)+1.5a-9
a=-0.8

Answer 1

7(0.5a+1)+1.5a-9=7*0,5а+7*1+1,5а-9=3,5а+7+1,5а-9=5а-2
a=-0.8
5а-2=5*(-0,8)-2=-4-2=-6

Comments

cns

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сс

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спасибо