Question

Приведите подобное слагаемые :
a) -4a+12a+13a-27a
б) 42x-48x-63x-24x
в) -17x+19y-15y+13x
г) 9n-8m-7m+35n-19n

Answer 1

a) -4a+12a+13a-27a = -4a+25a-27a=21a-27a=-6a
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б) 42x-48x-63x-24x = -6x-63x-24x=-30x-63x=-93x
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в) -17x+19y-15y+13x = -4x+4y=-4(x-y)
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г) 9n-8m-7m+35n-19n = -10n-15m+35n=20n-15m=5*(4n-3m)