exam Maths Puzzle Numerical Ability

Solve by substitiution
4x+6y=8
y=4x-22

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exam Other Question

Graph the inequality 2x+5y<10 labeling all key items including the EXACT coordinates INTERCEPTS. I have been struggling with this math problem for awhile now and I was wondering if anyone could help me? I would deeply appreciate it!! Please and Thank you!!

Multiplying Polynomials

Solve.
(x-3)(x+7)-(x+1)(x+5)=0