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Slav-nsk [51]
4 years ago
15

Solve for x. 5x – 7 = 8x – 4

Mathematics
2 answers:
hammer [34]4 years ago
3 0

Answer:

x =-1

Step-by-step explanation:

5x- 7 = 8x - 4\\\\\mathrm{Add\:}7\mathrm{\:to\:both\:sides}\\5x-7+7=8x-4+7\\\\Simplify\\5x=8x+3\\\\\mathrm{Subtract\:}8x\mathrm{\:from\:both\:sides}\\5x-8x=8x+3-8x\\\\Simplify\\-3x =3\\\\\mathrm{Divide\:both\:sides\:by\:}-3\\\frac{-3x}{-3}=\frac{3}{-3}\\\\Simplify\\x=-1

prisoha [69]4 years ago
3 0

Answer:

x = -1

Step-by-step explanation:

5x - 7 = 8x - 4\\

Collect like terms and simplify

5x-8x =-4+7\\-3x =3

Divide both sides of the equation by -3

\frac{-3x}{-3} = \frac{3}{-3} \\\\x =-1

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