Answer:
- Andre subtracted 3x from both sides
- Diego subtracted 2x from both sides
Step-by-step explanation:
<u>Andre</u>
Comparing the result of Andre's work with the original, we see that the "3x" term on the right is missing, and the x-term on the left is 3x less than it was. It is clear that Andre subtracted 3x from both sides of the equation.
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<u>Diego</u>
Comparing the result of Diego's work with the original, we see that the "2x" term on the left is missing, and the x-term on the right is 2x less than it was. It is clear that Diego subtracted 2x from both sides of the equation.
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<em>Comment on their work</em>
IMO, Diego has the right idea, as his result leaves the x-term with a positive coefficient. He can add 8 and he's finished, having found that x=14.
Andre can subtract 6 to isolate the variable term, and that will give him -x=-14. This requires another step to get to x=14. Sometimes minus signs get lost, so this would not be my preferred sequence of steps.
As a rule, I like to add the opposite of the variable term with the least (most negative) coefficient. This results in the variable having a positive coefficient, making errors easier to avoid.
It's simple .....
just subtract R and C.....
so 50x+10-10x-275
= 40x-265
so the answer is B
Answer:
The answer is D
Step-by-step explanation:
Answer:
0.15y
Step-by-step explanation:
0.2*0.75*y = 0.15y
Answer:
$105.
Step-by-step explanation:
After one year her annual rate (AR) will have been $5 (5 percent of her savings (s))
S+AR(5%) --> $100+5 --> $150 after one year.
