Question

Encuentra el valor de x​

Answer 1

4x+3=21-2x

4x+2x=21-3

6x=18

x=3

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2(2+2x)=12

4+4x=12

4x=12-4

4x=8

x=2

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5x-12=3

5x=3+12

5x=15

x=3

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3x+1=x-3

3x-x=-3-1

2x=-4

x=-2

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3(2x+1)=-9

6x+3=-9

6x=-9-3

6x=-12

x=-2

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2(2x-5)=3(x-1)-4

4x-10=3x-3-4

4x-10=3x-7

4x-3x=10-7

x=3