exam Maths Puzzle Numerical Ability

the diffrence of a number and seven

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exam Other Question

Solve

(4x + 5 / 3) + 2 = x/7
Explain why the graph of |x| + |y| = 1 does not contain any points that have
a. a y-coordinate that is greater than 1 or less than -1

b. an x- coordinate that is geater than 1 or less than -1