Gabriel remembers he has a coupon for $2 off his bill. Which expression gives the new amount he will pay?
Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. His sister states that the expression should be x + x + 0.5x + y + y – 2. Who is correct? Explain.
Hey are both correct Gabriel's sis can comb it ne like terms and they are equivalent expressions
Gabriel has $30 to pay for the groceries. What simplified expression would represent the amount of change he should receive?
Gabriel used the expression 2.5x + 2y – 2 to represent his total cost, and 28 – 2.5x – 2y to represent the amount of change he should receive from $30. What was Gabriel’s error?
Subtract the quantity distribute negative then add 2 to 30
What is this expression after simplifying?
A student simplifies (6b + 4r) – (2b + r) and says that the result is 4b + 5r. Explain the error and describe the correct steps to simplify the expression.
The student did not distribute the negative when subtracting. Distributing the negative, the expression is equal to 6b + 4r – 2b – r. Then use the commutative property to rewrite it as 6b – 2b + 4r – r. Then you can use the distributive property to write as (6 – 2)b + (4 – 1)r, which simplifies to 4b + 3r.
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