If A 5a-7b+ 7, B = -4a-7+4b, C=9a-7-2b, and D-14b-2a+ 4, find the value of A+2B+ C+-2D
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19
Step-by-step explanation:
A+2B+C+-2D=5a-7b+7+2(-4a-7+4b)+9a-7-2b+(-2(-14b-2a+4)
=5a-7b+7-8a-14+8b+9a-7-2b+(28b+4a-8)
=5a-7b+7-8a-14+8b+9a-7-2b+28b+4a-8
=5a-8a+9a+4a-7b+8b-2b+28b+7-14-7-8
=10a+27b-22 ans
Answered by
1
Answer:
f A 5a-7b+ 7, B = -4a-7+4b, C=9a-7-2b, and D-14b-2a+ 4, find the value of A+2B+ C+-2D
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