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Maths Puzzle
Numerical Ability
how would you find the slope of 8x+9y=86 and what is y-intersept,x-intersept what would be the new equation
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Beth ate at a steakhouse. The cost of the meal plus a 15% tip was $42.50. What was the cost of the meal before the tip was added?
i'm not quite sure how to solve this using substitution.
3x-y=4
2x-3y=-9
Also, does the system have exactly one solution, or more?
Thanks for helping me!