exam Maths Puzzle Numerical Ability

Solve the following systems by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent.

x + 5y = 10
-2x - 10y = -20

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exam Other Question

This question is really troubling me and i could use some help please. Given that �e� is a complex number, solve e + 6ē = 7 (note: ē is the complex conjugate of e)
Given:FI=TA and IA=FT
Prove: Angle F and Angle I are supplementary