- 8 -(-4) = -4. The shaded buttons with - in them are negative. Cross then mount is subtract because they are “taking away”
3 - (-6) = -9. They started with 3 buttons. In order to subtract negatives when there,are none (or not enough, you have to bull negatives out of thin air ( bypassing zeros) so you add zero pains (as many as you need to subtract the negative.
A zero pair is two buttons that add to zero: one positive and one negative
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The equation could Darius use to determine the length, in centimeters, of a "typical” rectangle for a given width in centimeters is <span>y=1.518x+0.995</span>
