exam Maths Puzzle Numerical Ability

Translate to an algebra statement; do not solve:
Five times the difference of a number and one yield the same result as twice the same number increased by three.

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exam Other Question

solve by any method you prefer.

2x^2 + 12x = -18
Please help me solve the following problem:

If f(x)=4-x and {{{g(x)=1+x^2}}}, find (g X f)(-2)