Question

tìm x biết -2.(x-5)-18=20-3.(x+4)

Answer 1

-2.(x-5)-18=20-3.(x+4)

<=> -2x+10-18=20-3x-12

<=>-2x-8=8-3x

<=>-2x+3x=8+8

<=>x=16

Vậy x=16

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Answer 2

tìm x biết

-2.(x-5)-18=20-3.(x+4)

-2x+10-18=20-3x-12

-2x+3x=20-12-10+18

        x=16

Vậy x=16

Answer 3

-2(x-5)-18=20-3(x+4)

<=> -2x+10-18=20-3x-12

<=> -2x-8=-3x+8

<=> -2x-8+3x-8=0

<=> x-16=0

<=> x=16

Answer 4

\(-2.\left(x-5\right)-18=20-3\left(x+4\right)\)

\(\Leftrightarrow-2x+10-18=20-3x-12\)

\(\Leftrightarrow-2x-8=8-3x\)

\(\Leftrightarrow-2x+3x=8+8\)

\(\Leftrightarrow x=16\)

Answer 5

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