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1. Solve: (2.3x + 2.8) = (-1.2x + 9.8)

Respuesta :

Answer by JKismyhusbandbae:

[tex]\mathrm{Expand\:}\left(-1.2x+9.8\right):\quad -1.2x+9.8\\2.3x+2.8=-1.2x+9.8\\\mathrm{Subtract\:}2.8\mathrm{\:from\:both\:sides}\\2.3x+2.8-2.8=-1.2x+9.8-2.8\\\mathrm{Simplify}\\2.3x=-1.2x+7\\\mathrm{Add\:}1.2x\mathrm{\:to\:both\:sides}\\2.3x+1.2x=-1.2x+7+1.2x\\Simplify\\3.5x=7\\\mathrm{Divide\:both\:sides\:by\:}3.5\\\frac{3.5x}{3.5}=\frac{7}{3.5}\\\mathrm{Simplify}\\x=2[/tex]

EstelleEstelle

2.3x+2.8=−1.2x+9.8

x=2

Multiply both sides by 10:

2.3x x 10+2.8 x 10=-1.2x 10+9.8 x10

Refine:

23x +28=-12x+98

Subtract by 28:

23x + 28-28=-12x+98-28

Add 12x to both sides:

23x+12x=-12x+70+12x

Simplify:

35x=70

Divide by 35:

35x/35=70/35

Simplify:

x=2

Hope this helped!

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