~aljabar
x + x + 8x + 12
= 1x + 1x + 8 + 12
= (1 + 1 + 8)x + 12
= 10x + 12 ✔️
:)
x + x + 8x + 12 = ...
= 2x + 8x + 12
= 10x + 12
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