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zheka24 [161]
2 years ago
14

Trains Two trains, Train A and Train B, weigh a total of 515 tons Train Ais heavier than Train

Mathematics
1 answer:
Law Incorporation [45]2 years ago
7 0

Answer:

By using linear equation

Step-by-step explanation:

a+b=515......Equation 1

a-b=475.........Equation 2

From equation 1

a=515-b

Putting value of a in Equation 2

515-b - b=475

515- 2b=475

515-475=2b

2b=515-475

2b=40

b=40/2

b= 20

Putting b=20 in Equation 1

a+20=515

a=515-20

a= 495

a=495

b= 20

Check whether equation hold true

a+b=515

495+20=515

a-b= 475

495-20=475

Please mark it branliest if the answer is little bit satisfactory. Thanking in anticipation.

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Answer:

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Step-by-step explanation:

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Jada solved the equation Negative StartFraction 4 over 9 EndFraction = StartFraction x over 108 EndFraction for x using the step
aleksandr82 [10.1K]

Answer:

Jada error was he multiplied the equation by (-9/4) to make the coefficient of x one. He should have multiplied it by 108

Step-by-step explanation:

Jada solved the equation

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using the steps below:

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Jada should have multiplied through by 108, instead of (-4/9). That was the error he made.

Multiplying through by 108 gives

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x = -48

The answer should have been

x = -48

and not

x = -1/48

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