You can
put this solution on YOUR website!Two numbers have a sum of 22. Their difference is 4. what are the two numbers?
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Let the two numbers be x and y.
EQUATIONS:
x+y = 22
x-y = 4
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Add the two equations to get:
2x = 26
Divide both sides by 2 to get
x = 13
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Substitute that value into x+y=22 to solve for y:
13+y = 22
y = 9
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The numbers are x = 13 and y = 9
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Cheers,
Stan H.
You can
put this solution on YOUR website!
given:
Two numbers (let them be
and
) have a
of
,
and we can write it as:
Their
is
, and
we will write it as:
now we have a system of equations with two unknown variables
and
we need to solve this system, and we can do it this way:
....first this equation solve for
, then substitute it in second equation
=>
will be:
.move
to the right, and
to the left
...divide both sides by
........second number
since
, we will go back to the first equation and substitute it in order to calculate
.......first number
check:
the sum
the difference
(