exam Maths Puzzle Numerical Ability

This is from a worksheet our teacher gave to us in class. He wants us to try and solve a 4x4 matrix system and solve for the determinants using Cramer's Rule and finding the answe

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Word problems always give me fits, can you help me with this one? Thanks!
ac

Number Problem: If one-half of one integer is subtracted from three-fifths of the next consecutive integer, the difference is 3. What are the two integers?
Determine the slope and y-intercept of each line,then graph it x+y=8

m=_____;b=________