livvyxo
livvyxo
03-05-2016
Mathematics
contestada
Can someone please solve 10n - 3 = 7n + 21
Respuesta :
Willchemistry
Willchemistry
03-05-2016
[tex]10 n-3 = 7n+21[/tex]
Add 3 to both sides :
[tex]10n-3+3=7n+21+3[/tex]
[tex]10n=7n+24[/tex]
Subtract 7 n from both sides:
[tex]10n-7n=7n+24-7n[/tex]
[tex]3n=24[/tex]
Divide both sides by 3 :
[tex] \frac{3n}{3} = \frac{24}{3} [/tex]
[tex]n = 8[/tex]
hope this helps!
Answer Link
VER TODAS LAS RESPUESTAS ( 83+ )
Otras preguntas
A plane moves with a velocity of 63.5 m/s at 32 degrees South of East. Calculate the plane's horizontal and vertical velocity components.
If the average density of the Universe is small compared with the critical density, the expansion of the Universe described by Hubble's law proceeds with speeds
a 1.00-l solution contains 2.50×10-4 m cu(no3)2 and 1.20×10-3 m ethylenediamine (en). the kf for cu(en)22 is 1.00 × 1020. chegg
in 1890 had prophetic vission which ultimalty led to the widespread ritual practie of the ghst dance
The Homecoming dance is going to be held in the school gymnasium which is a 300' x 300' square. The fire marshal requires 4 square feet per person, but they all
IM A 2100-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 5.00 m before coming into contact with the top of the beam, and
you measure the period of a mass oscillating on a vertical spring ten times as follows: period (s): 1.38, 1.18, 1.47, 1.35, 1.52, 1.23, 1.62, 1.17, 1.03, 1.11 w
Solve the equation for y. Then find the value of y for each value of x. y + 2x = 5; x = - 2, 0, 3
what is the mood of the passage?calm and relaxedanxious and terrifyingsilly and lightheartedlonely and sad
helfen Sie mir bitte . Ich brauche wirklich bald eine Lektion.Ich komme aus der Ukraine