Brandon uses the steps below to solve the equation 15 x + 6 = 14 x + 5 using algebra tiles.
2 answers:
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When you have two lines in an x shape, vertical angles are the ones opposite each other.
in the example here, the angles with the purple dots are vertical angles and the angles with the blue dots are the other vertical angles
in the example here, the angles with the purple dots are vertical angles and the angles with the blue dots are the other vertical angles
It's a quadratic equation in disguise. If you let , then
, and we can rewrite the equation as
Solve for however you like; we get
and
.
But we want to solve for , so we have