Упрости и вычисли....... 1.5(-2.4a+3.8b)-1.6(2.5a-b)

Question

Упрости и вычисли....... 1.5(-2.4a+3.8b)-1.6(2.5a-b)

Comments

если a= 2 ...b= -3

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1.5(-2.4a+3.8b)-1.6(2.5a-b)= -3.6a +5.7b -4a +1.6b = -7.6a+7.3b=-7,6*2+7,3*(-3)=-15,2-21,9=-37,1

Answer 1

.....= - 3,6а+5,7в-4а+1,6в= - 7,6а+7,3в

при а=2,  в= - 3
-7,6*2+7,3*( -3)= - 37,1

Answer 2

= -3.6a +5.7b -4a +1.6b =7.3b -7.6a, при а=2, b = -3, =7.3*(-3) -7.6*2 = -21.9 -15.2 = -37.1