bianca1324 bianca1324

02-11-2016
Mathematics

contestada

3(x+7)-12=4(2x-7)

How do you do this?!?!

Respuesta :

MohamedSharif MohamedSharif

13-11-2016

3x+21-12=8x-28
collect the like terms
3x-8x=-28(21-12=9)
-5x=-28-9
-5x=-37
x=7.4

Answer Link

Otras preguntas

what is the 8th term in the sequence? 14, 18, 116, 132, ...

The periodic law states that elements that have similar properties appear _________.. . A.to the left of each other. B.at regular intervals

Find the three arithmetic means between 7 and 21.

Prove the equation 2x^2 + y^2 = 14 has no positive integer solutions.

Which compromise established that territory from the Louisiana Purchase above 36°30' would be free from slavery?

A line has a slope of 1/2 and a run = 50. What is the rise? A). 25. B) 50. C) 100

What is the simplified form of each expression?. . -√196. A. 98 . B. –14 . C. 14 . D. 393

Which of the following best describes the US government? A. Executive rule B. Dictatorship C. Direct democracy D. Representative democracy

How did christianity develop in the Byzantine Empire?

A roller coaster reaches its maximum kinetic energy when it. A) reaches the bottom of a hill. B) begins rolling down a hill. C) is sitting at the top of a hill.