exam Maths Puzzle Numerical Ability

Solve the inequality

2m + 7 < 9

Any help would be greatly aprreciated ;)

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exam Other Question

A nursary has a 2ft. plant that will grow 3ft. every year, and a 4ft. plant will grow 1ft. every year, how long will it for the plants to be the same height? How tall will they be? Could you please help me solve the system of equations?
3x+3y+z=5
x-3y+2z=-13
8x-2y+3z=-8