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b) 2(2x+y)+2(3x-2y)=4x+2y+6x-4y=10x-2y
b) 2*(2x+y)+2*(3x-2y)=4x+2y+6x-4y=10x-2y
Proszę :)
a=2y + 5z.
S=3(2y+5z)
S=6y+15z
b)S=2a+2b
a=2x + y
b=3x - 2y
S= 2(2x + y) + 2(3x - 2y)
S=4x+2y +6x- 4y
S=10x-2y