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Answer:-21
Step-by-step explanation:
3•(-7)
3 x -7=-21
You would just have to divide 20 and 4.
20/4=5
You can write 5 pages in one day.
x=0
4+(x+y)=(4+)+y
4 + x + y = 4 + y
Subtract y from both sides
4 + x + y - y = 4 + y - y
Simplify
4 + x = 4
Subtract 4 from both sides
4 + x - 4 = 4 - 4
Simplify
x = 0