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Are division and subtraction commutative and associative?
No.Neither are commutative: a - b does not equal b - a, and a/b does not equal b/a.Neither is associative: (a - b) - c does not equal a - (b - c), and (a/b)/c does not equal a/(b/c).Examples of these are:4 - 2 does not equal 2 - 4.1/3 does not equal 3/1.(6 - 5) - 1 does not equal 6 - (5 - 1).(10/2)/2 does not equal 10/(2/2).
What does -a-b equal if a equals -4 and b equals 3?
1 is the answer. -(-4)- 3 = 4-3 = 1 .
Which of the expressions is equal to 28A.5+4×2-3+(6×3)B.4+4-3×2+9-(15÷5)C.7×2-5+(6÷2)+4D.(20+5)÷5+7×2-4?
3475636573626758335263257623587365
3 plus 5 equals 4times b therefore b equals?
3 + 5 = 4*b so 8 = 4*b Divide both sides by 4: 2 = b
What is 3b equal if b equals 4?
If ( b ) equals 4, then ( 3b ) can be calculated by substituting 4 for ( b ). Thus, ( 3b = 3 \times 4 = 12 ). Therefore, ( 3b ) is equal to 12.
