2 years ago

Help me pleaseeeeeeeeeee nowwwww

Mathematics

2 answers:

mario62 [17]2 years ago

8 0

Answer:

the correct answer is letter B

geniusboy [140]2 years ago

4 0

The correct answer is B

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marusya05 [52]

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Step-by-step explanation:

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2 years ago

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The sum of two numbers is 126 and their difference is 42. what are two numbers

Snowcat [4.5K]

Answer:

Step-by-step explanation:

$x,\ y-numbers\\\\\text{The system of equations:}\\\\\underline{+\left\{\begin{array}{ccc}x+y=126\\x-y=42\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad2x=168\qquad\text{divide both sides by 2}\\.\qquad x=84\\\\\\\text{Put the value of}\ x\ \text{to the first equation:}\\\\84+y=126\qquad\text{subtract 84 from both sides}\\y=42$