2(4a-0,5b)-(3a-7b) при a= -0,4 b= 1/3

Question

2(4a-0,5b)-(3a-7b) при a= -0,4 b= 1/3

Answer 1

2(4a-0,5b)-(3a-7b) = 8а - в - 3а + 7в = 5а + 6в,при a= -0,4 b= 1/3:5 * (-0,4) + 6 * 1/3 = -2 + 2 = 0

Comments

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Answer 2

8а-b -3a + 7b = 5a +6b= -5*0.4 +6*1/3 = -2+2=0