SKILLS
7-12 ■ Triangular Systems Use back-substitution to solve the triangular system.
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Algebra and Trigonometry
- Substitution Method Use the substitution method to find all solutions of the system of equations. {x2+y=9xy+3=0}arrow_forwardElimination method Use the elimination method to find all solutions of the system of equations. {2x+5y=154x+y=21}arrow_forwardSolve the system of equations: {2x2y+3z=64x3y+2z=02x+3y7z=1 .arrow_forward
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