Câu hỏi của Hung nigga

Question

A. -15(x + 2) + 7(2x - 3)= -50

B. 3(x + 2) - 6(x - 5)= 2(5 - 2x)

👁💧👄💧👁 · Accepted Answer

a, $-15\left(x+2\right)+7\left(2x-3\right)=-50\
-15x-30+14x-21=-50\
-x-51=-50\
-x=-50+51\
-x=1\
\Rightarrow x=-1$Vậy $x=-1$

b, $3\left(x+2\right)-6\left(x-5\right)=2\left(5-2x\right)\
3x+6-6x+30=10-4x\
-3x+36=10-4x\
-3x+4x=10-36\
x=-26$Vậy $x=-26$Câu trả lời: a, $-15\left(x+2\right)+7\left(2x-3\right)=-50\
-15x-30+14x-21=-50\
-x-51=-50\
-x=-50+51\
-x=1\
\Rightarrow x=-1$Vậy $x=-1$

b, $3\left(x+2\right)-6\left(x-5\right)=2\left(5-2x\right)\
3x+6-6x+30=10-4x\
-3x+36=10-4x\
-3x+4x=10-36\
x=-26$Vậy $x=-26$

Nguyễn Huyền Trâm · Answer

a, −15(x+2)+7(2x−3)=−50−15x−30+14x−21=−50−x−51=−50−x=−50+51−x=1⇒x=−1−15(x+2)+7(2x−3)=−50−15x−30+14x−21=−50−x−51=−50−x=−50+51−x=1⇒x=−1Vậy x=−1x=−1

b, 3(x+2)−6(x−5)=2(5−2x)3x+6−6x+30=10−4x−3x+36=10−4x−3x+4x=10−36x=−263(x+2)−6(x−5)=2(5−2x)3x+6−6x+30=10−4x−3x+36=10−4x−3x+4x=10−36x=−26Vậy x=−26Câu trả lời: a, −15(x+2)+7(2x−3)=−50−15x−30+14x−21=−50−x−51=−50−x=−50+51−x=1⇒x=−1−15(x+2)+7(2x−3)=−50−15x−30+14x−21=−50−x−51=−50−x=−50+51−x=1⇒x=−1Vậy x=−1x=−1

b, 3(x+2)−6(x−5)=2(5−2x)3x+6−6x+30=10−4x−3x+36=10−4x−3x+4x=10−36x=−263(x+2)−6(x−5)=2(5−2x)3x+6−6x+30=10−4x−3x+36=10−4x−3x+4x=10−36x=−26Vậy x=−26

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