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Oxana [17]
3 years ago
13

Solve for x: [x - 2 + 10 = 12

Mathematics
1 answer:
Monica [59]3 years ago
5 0

Answer:x-2+10=12

We move all terms to the left:

x-2+10-(12)=0

We add all the numbers together, and all the variables

x-4=0

We move all terms containing x to the left, all other terms to the right

x=4

Step-by-step explanation:

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2 years ago
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Chase collects 27.34 for a fundraiser.Sydney collects 9.83 more than chase.Ally collects 4 times as much as sydney.How much mone
Vinil7 [7]

Collection of Chase = 27.34

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3 years ago
Anastasia took a math test and scored 153 points which was 90% of the total possible points. How many possible points were on th
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3 years ago
Could someone please help me with this thank you very much
elena-s [515]

Answer:

Answer for #10:

y = 2 \: and \: x = 1

Answer for #1:

x = 2 \: and \: y =  - 1

Step-by-step explanation:

In order to solve a simultaneous equation using the substitution method you have to:

Use one of the equation and substitute it into the other equation, in this case equation <em>B</em><em> </em>was substituted into equation <em>A</em><em>.</em>

<em>equ. \: a = (2x - 3y = 7) \\ equ. \: b = (x = 1 - y)</em>

Therefore since x = 1 - y, equation A would be:

2(1 - y) - 3y = 7 \\ (2 - 2y) - 3y = 7 \\  - 2y - 3y = 7 - 2 \\  - 5y = 5 \\ y =  - 1 \: and \: x = 2

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2 years ago
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