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KatRina [158]
4 years ago
9

Solve the following equation for x: 2x + 5y = 8.

Mathematics
1 answer:
AleksAgata [21]4 years ago
5 0

Answer:

x = -5/2 y +4

Step-by-step explanation:

2x+5y = 8

Subtract 5y from each side

2x+5y -5y = -5y+8

2x = -5y+8

Divide each side by 2

2x/2 = -5y/2 +8/2

x = -5/2 y +4

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Find 3 consecutive integers whose sum is 105.
MatroZZZ [7]

Answer:

34 + 35 + 36 = 105

Step-by-step explanation:

To solve for X, you first add the integers together and the X variables together. Then you subtract three from each side, followed by dividing by 3 on each side. Here is the work to show our math:

X + X + 1 + X + 2 = 105

3X + 3 = 105

3X + 3 - 3 = 105 - 3

3X = 102

3X/3 = 102/3

X = 34

Which means that the first number is 34, the second number is 34 + 1 and the third number is 34 + 2. Therefore, three consecutive integers that add up to 105 are 34, 35, and 36.

34 + 35 + 36 = 105

We know our answer is correct because 34 + 35 + 36 equals 105 as displayed above.

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3 years ago
Solve the following system of equations below x-2y=3 2x-3y=9
Artyom0805 [142]

x - 2y = 3 \\ 2x - 3y = 9 \\  \\  - 2x + 4y =  - 12 \\  \: 2x - 3y = 9 \\  \\ y =  - 3 \\ 2x + 9 = 9 \\ 2x = 0 \\ x = 0 \\ x = 0 \:  \: y =  - 3
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Jamal goes to a fast food restaurant and orders some tacos and burritos. He sees on the nutrition
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Answer:

4 burritos and 2 tacos

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