exam
Maths Puzzle
Numerical Ability
Solve by the substitution method
3d+e over 4 = d+1 over 2
d-e over 4 = 1
If anyone can answer this problem I would greatly appreciate it. Please and Thank You
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exam Other Question
Solve the system by any method
{x=9/2+5
2x-9y=10
Why does multiplying two negative numbers equals a positive number?