If you would like to know which of the following steps should be performed to eliminate variable d first, you can find this using the following steps:
equation a: 2c = d - 8 /*(-3)
equation b: c = 3d + 8
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-6c = -3d + 24
c = 3d + 8
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-6c + c = -3d + 24 + 3d + 8
-5c = 32
5c = -32
c = -32/5
<span>The correct result would </span>be: <span>multiply equation a by −3.</span>
Multiplying and dividing integers with the same sign and different signs.
When multiplying and dividing with the same sign, the answer will always be positive.
6/3 = 2
-6*-3=18 (Two negatives make a positive)
-4/-2=2 (This is because there are two -2s in -4, so the answer will always be positive- also two negatives make a positive.)
When multiplying and dividing by different signs, the answer will always be negative.
3*-6= -18
4/-2 = -2
Because the answer will always by negative, you can multiply or divide normally and then just add the negative sign (-) in front of the answer.
so i hope you have a great day and have fun but i not know this
Answer:
(-2,3)
Step-by-step explanation:
y=x+5 y=−2x−1
Solve y=x+5 for y:
Substitute x+5 for y in y=−2x−1:
y=−2x−1
x+5=−2x−1
x+5+2x=−2x−1+2x (Add 2x to both sides)
3x+5=−1
3x+5+(−5)=−1+(−5) (Add -5 to both sides)
3x=−6
<u>3x </u> = <u>-6</u> (Divide both sides by 3)
3 3
x=−2
Substitute −2 for x in y=x+5:
y=x+5
y=−2+5
y=3 (Simplify both sides of the equation)
Therefore, x= -2 and y=3
Answer:
city r is warmer
Step-by-step explanation:
2 is less than 6
