book Maths Puzzle Numerical Ability

Write the following phrase using symbols.

m decreased by by 4

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book Other Question

Why do we need square roots? 3. y=-x-5 please solve these im not stupid the questions are just hard
x=-3
4. y=x-6
y=-4
5.y=-x-4
y=x+2
6. y=x-3
y=-x+5