exam
Maths Puzzle
Numerical Ability
Solving systems by substitution:
use substitution to slve each system of equations. Check your solution:
{3t-r=9
{r=2t+8
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exam Other Question
helen has $1.35 in her bank in nickels and dimes. there are 9 more nickels than dimes. find the number she has of each coin.
(can you help me with this problem?)
7x+3=-2y