Suppose that an account earns 5.9% interest and after 2 years the balance is $ 4472. Find the principal that was invested. Use
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We want to solve the equation
we start by distributing on both sides the multiplication. So we get
if we operate, we get
if we operate on both sides, we get
we start by subtracting 7v on both sides, so we get
now, we add 6 on both sides. So we get
so if we divide both sides by 16 we get
so the value of v is -9/8
