Combine like terms to simplify -1(2/7b + 9) -8
1 answer:
Simplify 2/7b to 2b/7
-1 × (2b/7 + 9) - 8
Simplify 1 × (2b/7 + 9) to (2b/7 + 9)
-(2b/7 + 9) - 8
Simplify brackets
-2b/7 - 9 - 8
Collect like terms
-2b/7 + (-9 - 8)
Simplify
<u>-2b/7 - 17</u>
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Answer:
(i)unique solution
Explanation:
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We solve for a thus in the second equation:
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2+a2-x3=-2
a2-x3=-4
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