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xxTIMURxx [149]
3 years ago
5

Please help. I’ll mark you as brainliest if correct!

Mathematics
1 answer:
mezya [45]3 years ago
4 0

Answer:

x = -1

Step-by-step explanation:

2x - 7 = 9x

Subtract 2x from both sides: -7 = 7x

Divide both sides by 7: -1 = x

Now plug in 7 for every value of x in the original equation to make sure you are correct:

2(-1) - 7 = 9(-1)

-2 - 7 = -9

-9 = -9

I hope this helps!

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234 base five + 434 base 5 + xxxx base 5 =2304 please help
Kryger [21]

It looks like the given equation is

234₅ + 434₅ + x₅ = 2304₅

First, we have

234₅ + 434₅ = 1223₅

because

• 4₅ + 4₅ = (8)₅ = (5 + 3)₅ = 10₅ + 3₅ = 1<u>3</u>₅

(carry the 1)

• 3₅ + 3₅ + 1₅ = (7)₅ = (5 + 2)₅ = 10₅ + 2₅ = 1<u>2</u>₅

(carry the 1)

• 2₅ + 4₅ + 1₅ = (7)₅ = (5 + 2)₅ + 10₅ + 2₅ = <u>12</u>₅

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• (3 - 1)₅ - 2₅ = 2₅ - 2₅ = <u>0</u>₅

• 2₅ - 1₅ = <u>1</u>₅

x₅ = 2304₅ - 1223₅ = 1031₅

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2 years ago
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