Ответ:
0.8(4а+3b)-6(0.3+0.8b)
3.2a+2.4b-1.8a+4.8b
3.2a-1.8a=1.4a
2.4b+4.8b=7.2b
1.4*a=1.4*2=2.8
7.2*b = 7.2*(-4)=-28.8
2.8 - 28.8=-26
Ответ: -26
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Ответ:
0.8(4а+3b)-6(0.3+0.8b)
3.2a+2.4b-1.8a+4.8b
3.2a-1.8a=1.4a
2.4b+4.8b=7.2b
1.4*a=1.4*2=2.8
7.2*b = 7.2*(-4)=-28.8
2.8 - 28.8=-26
Ответ: -26