oofmath oofmath

12-07-2018
Mathematics

contestada

-x+4(x+3)=9 substitution method

Respuesta :

yuumyllo yuumyllo

12-07-2018

-x+4(x+3) = 9

Multiplying...

-x+4x+12=9
So,
3x + 12 = 9

Now, subtract 12 from both sides.

3x + 12 - 12 = 9 - 12
3x = -3

Then, divide by 3.
3x/3 = -3/3
x = -1

Answer Link

Otras preguntas

Which stage in the process of making a protein should be inserted into Step 3? 1. DNA in the nucleus contains information to code for a protein. 2. RNA stores a

What is the cause and effect of russia signing the treaty of brest-litovsk?

the ratio of blue marbles to white marbles in a bag is 4 to 5 . at this rate, how many blue marbles are there if there are 15 white marbles

Which of these is a characteristic of a civilization? (4 points) cities use of resources society of equals public transportation

The Buddha's first dharma talk covered A. The rig Veda B. The 5 pillars C. The ten commandments D. The four noble truths and eightfold path

round to nearest 10,000 to 591,563

An experiment using alpha particles to bombard a thin sheet of gold foil indicated that most of the volume of the atoms in the foil is taken up by ...

The formula for the area A of a trapezoid is shown below where h represents its height and b1 and b2 represent the lengths of its bases. for this problem let b1

Write 9 decimals with three decimal places that when rounded to the nearest hundredth round to 4.56

Help me solve this 10 elves each made 10 xylophones. Each xylophone had 10 keys. They did this for 10 days.How many keys were made by the elves? Show in exponen