exam Maths Puzzle Numerical Ability

Find values for m and b in the following system so that the solution to the system
is (-3, 4).
5x+7y=b
mx+y=22

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exam Other Question

How do you solve the equation {{{m+2w=-5}}} if the domain is {-3, 0, 4}? There are 4 consecutive integers. Their sum is 100 decreased by twice the difference between the greatest and twice the least.