Question

me ayudan...
A) 5.(x+3)=2x-3
B)2.(2x-1)=7.(x-1)
C)2.(x+5)-3x=x+18
D)3.(2x+3)-4.(x-5)=1

Answer 1

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Answer 2

Respuesta:

A)

• 5(x+3) = 2x - 3
• 5x + 15 = 2x - 3
• 5x - 2x = -3 -15
• 3x = -12
• x = -12/3
• x = -4

B)

• 2(2x-1) = 7(x-1)
• 4x - 2 = 7x - 7
• -2 +7 = 7x - 4x
• +5 = 3x
• 5/3 = x

C)

• 2(x+5) - 3x = x + 18
• 2x + 10 - 3x = x + 18
• -x + 10 = x + 18
• 10 - 18 = x + x
• -8 = 2x
• -8/2 = x
• -4 = x

D)

• 3(2x+3) - 4(x-5) = 1
• 6x + 9 - 4x + 20 = 1
• 2x + 29 = 1
• 2x = 1 - 29
• 2x = -28
• x = -28/2
• x = -14