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UkoKoshka [18]
3 years ago
15

What is the value of x if x + 4y = 7 and x - 4y = 8?

Mathematics
2 answers:
andre [41]3 years ago
5 0
X+4y=7
x-4y=8
2x=15
x=7.5
rewona [7]3 years ago
4 0

Answer:

x====4

Step-by-step explanation:

multiply and divide

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0.75y-1.5y+0.5=5 I need answers to this asap
Mnenie [13.5K]

Answer:

y = -6

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

0.75y−1.5y+0.5=5

0.75y+−1.5y+0.5=5

(0.75y+−1.5y)+(0.5)=5(Combine Like Terms)

−0.75y+0.5=5

−0.75y+0.5=5

Step 2: Subtract 0.5 from both sides.

−0.75y+0.5−0.5=5−0.5

−0.75y=4.5

Step 3: Divide both sides by -0.75.

Hope this helps!

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-Josh

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2 years ago
HELP ME PLEASEE I WILL MARK BRAINLIEST
igor_vitrenko [27]

Answer: $21.6

Step-by-step explanation: you multiply 1.20 by 18

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3 years ago
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Hatshy [7]

Answer:

1. He added 5 instead of subtracted 5.

2. He should have subtracted 5.

3. 2 2/3

Step-by-step explanation:

3x+5=13

subtract 5 to both sides 3x=8

divide both sides by 3 x=8/3 or 2 2/3

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3 years ago
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Step-by-step explanation:

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Y=-3/2x+3

Step-by-step explanation:

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