Question 184578
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1st condition:{{{x+y=128}}}
2nd condition:{{{x-y=114}}}
In 1st condtn we get-------> {{{x=128-y}}}, EQN 1
Susbt. EQN 1 in 2nd condition:
{{{128-y-y=114}}}
{{{128-114=y+y}}}
{{{14=2y}}}-------->{{{cross(14)7/cross(2)=cross(2)y/cross(2)}}}
{{{highlight(y=7)}}}
Subst.in EQN 1:
{{{x=128-7=highlight(121)}}}
Answers---> 7 & 121
Check via condition 1:
{{{121+7=128}}}
{{{128=128}}}
check via condition 2:
{{{121-7=114}}}
{{{114=114}}}
Thank you,
Jojo</pre>