Упростите выражения!
а)3n-8n-5n+2+2n
b)(4a-b)-5a+3b
B)-(3x-0,4)+(0,4x-3)
Г)9-2(x+1)+x
Д)-3(a-2)+6(a-4)-4(3a+2)
а)3n-8n-5n+2+2n
b)(4a-b)-5a+3b
B)-(3x-0,4)+(0,4x-3)
Г)9-2(x+1)+x
Д)-3(a-2)+6(a-4)-4(3a+2)
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А) n(3 - 8 - 5 + 2) + 2 = -8n + 2b) 4a - b - 5a + 3b = a(4-5) + b(-1 + 3) = -a + 2b
c) -3x + 0,4 + 0,4x - 3 = x(-3 + 0,4) + 0,4 - 3 = -2,6x - 2,6
d) 9 - 2x - 2 + x = x(-2 + 1) + 9 - 2 = -x + 7
e) -3a + 6 + 6a - 24 - 12a - 8 = a(-3 + 6 - 12) + 6 - 24 - 8 = -9a - 26