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lyssa128
09.10.2019 •
Mathematics
Solving multi-step equations
10p + 9 − 11 − p = −2(2p + 4) − 3(2p − 2)
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Ответ:
-2 (2p+4) - 3 (2p-2)
Use distributive property:
-2* (2p)+ (-2)* 4 - 3* (2p) - 3* (-2)
= -4p - 8 -6p +6
= (-4p - 6p) + (6-8)
= -10p -2.
Left side:
10p + 9 - 11 -p
=(10p - p) + (9 - 11)
= 9p - 2
-10p - 2= 9p - 2
⇒ -10p + (-2+2) = 9p + (-2+2)
⇒ -10p = 9p
⇒ p=0.
Final p=0.
Hope this would help~
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