Question

a) -(3c-9b)=9b-3c
d) 2(x-3)+3(x+2)=5x​

Answer 1

Объяснение:

d) 2(x-3)+3(x+2)=5x

2x-6+3x+6= 5x

5x = 5x

x Є R

a) -(3c-9b)=9b-3c

-3c+9b= 9b-3c

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