Answer: <em>уравнение имеет 2 решения:</em>
<em> x₁ = - 4; x₂ = - 2.</em>
Step-by-step explanation:
<em>Ix + 3I = 1</em>
<em>1) x + 3 = 1</em>
<em> x + 3 - 3 = 1 - 3</em>
<em> x = -2</em>
<em>2) - (x + 3) = 1</em>
<em> x + 3 = - 1</em>
<em> x + 3 - 3 = - 1 - 3</em>
<em> x = - 4</em>
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Answer:
c = 5.00w +3.10g
Step-by-step explanation:
Let w represent the number of car washes purchased, g represent the number of gallons of gas purchased, and c represent the total cost of the trip.
cost = (cost of car washes) + (cost of gas)
c = 5.00w + 3.10g
Answer:
Step-by-step explanation:
Subtraction is not commutative. For example, 4 − 7 does not have the same difference as 7 − 4. The − sign here means subtraction.
However, recall that 4 − 7 can be rewritten as 4 + (−7), since subtracting a number is the same as adding its opposite. Applying the commutative property for addition here, you can say that 4 + (−7) is the same as (−7) + 4. Notice how this expression is very different than 7 – 4.
I'm sorry, I don't see the question. Could you please retake the photo in better quality so I could answer it? Thanks!
