a.
b.
c.
Hope it helps
Answer:
3$
Step-by-step explanation:
c or d
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Let's simplify by step
28x-12+2x-4-x
28x+-12+2x+-4+-x
Combine like terms
(28x+2x+-x)+(-12+-4)
29x+-16
= 29x-16
I hope that's help !
d
i did the test