SOLUTION: Solve by substitution;
ND + NQ = 20,
2ND - NQ =25
Algebra.Com
Question 1190818: Solve by substitution;
ND + NQ = 20,
2ND - NQ =25
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
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Solve by substitution;
ND + NQ = 20,
2ND - NQ =25
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and you can use this ,....
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