Simplify the following
1.a +a+a+a
2. 2p + 3q - p
3. 4b + 5a - 3a + 2a
4. d + 5b - 4d
Please it is very urgent
and also with calculation.
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Step-by-step explanation:
1. a+a+a+a=4a
2. 2p+3q-p=+p+3q
3. 4b+5a-3a+2a=4b+5a
4. d+5b-4d=+5b-3d
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