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notsponge [240]
2 years ago
11

Please help! 15 points!! brainliest if right

Mathematics
1 answer:
Stels [109]2 years ago
7 0

Answer:

a)7x-3x

b)4+28y

Step-by-step explanation:

first one follow bidmas

2nd one just do 4 times 1 =4 and 7y times 4 equals 28y

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<em />

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