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pls explain don't just give me the answer:
simplify each expressions
a) x+x+x+x
b) k+6k-3k
PLEASEEE HELPPP!!!!


Sagot :

a) 4x, there are 4 x’s, so just add them together

b) 4k || -3k + 1k = -2k, 6k - 2k = 4k OR
6k + 1k = 7k, 7k - 3k = 4k