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3. Two adjacent sides of a rectangle are 8a -4. Subtract the sum of Sx 5y - 2z and -6x + 8y 4z from the sum of 6x +rtmie5b and 7a2 -4xy. Find its peand-6x + 8y-4z from the sum of 6x + 2y-4z and- 5y - 2z-2x + 4y -8z1tn get 4x2 -7xy - 4y +1? |
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