The value of x so that the function is equal to -2
Given the following function
m(x) = 4x + 15
m(x) = 7
Since both of them are m(x), hence;
4x + 15 = 7
Subtract 15 from both sides
4x + 15 - 15 = 7 - 15
4x = -8
Divide both sides by 4
4x/4 = -8/4
x = -2
Hence the value of x so that the function is equal to -2
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