Question

preciso de calculos​

Answer 1

2x-(x-1)=5-(x-3)

2x-x+1=5-x+3

x+1=8-x

2x=7

x=7/2

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x-1/2 + x/3=1/4

3(x-1)+2x/6=1/4

4(3(x-1)+2x)=6

4(5x-3)=6

20x-12=6

20x=18

x=9/10

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2x+1/3 -1=x/2

2x+1-3/3=x/2

2x-2/3=x/2

3x=2(2x-2)

3x=4x-4

x=4

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2x-1/2=x +1/4

2x-1/2=4x+1/4

2(4x+1)=4(2x-1)

8x+2=8x-4

2≠-4 (conjunto vazio)

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2x+1/3=x+ 1-x/3

2x+1/3=3x+1-x/3

2x+1/3=2x+1/3

2x+1=2x+1 (reais)

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$\boxed{ \boxed{ \boxed{ \mathsf{alternativa \: \huge{(a).}}}}}$