All categories

3 years ago

Solve this equation -129=6(7+7x)-3

Mathematics

2 answers:

leva [86]3 years ago

7 0

Answer:

-4

Step-by-step explanation:

-129 = 6(7 + 7x) - 3

Distribute the 6 into the parentheses.

-129 = 42 + 42x - 3

Add like terms.

-129 = 39 +42x

Subtract 39 from both sides.

-168 = 42x

Divide 42 from both sides.

-4 = x

BlackZzzverrR [31]3 years ago

6 0

Answer:

x = -4

Step-by-step explanation:

6(7 + 7x) - 3 = -129

=>42 + 42x - 3 = -129

=>39 + 42x = -129

=>42x = -129 - 39

=>42x = -168

=>x = -168/42

=>x = -4

HOPE THIS HELPS YOU...

You might be interested in

Find a function g for which g'(4)=g'(-8)=0

morpeh [17]

one correct answer is g(x)=0.

g'(4)=0 and g'(-8)=0

8 0

3 years ago

Whats 94.732 x 26.75?

ddd [48]

Answer:

2534.081

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

A box of pencils is 5 1/4 inches wide. Seven pencils, laid side by side, take up 2 5/8 inches of the width. How many inches of t

Andre45 [30]

Answer: Width of box is not taken up by pencils = $2\dfrac58\text{ inches}$

Width of each pencil $=\dfrac38\text{ inches}$

Step-by-step explanation:

Given: Width of pencil box = $5\dfrac14\text{ inches}=\dfrac{21}{4}\text{ inches}$

Width of seven pencils = $2\dfrac58\text{ inches}=\dfrac{16+5}{8}\text{ inches}=\dfrac{21}{8}\text{ inches}$

Width of box is not taken up by pencils = Width of pencil box - Width of seven pencils

$\left \{ {{y=2} \atop {x=2}} \right. \dfrac{21}{4}-\dfrac{21}{8}\\\\=\dfrac{21\times2-21}{8}\\\\=\dfrac{21}{8}\text{ inches}=2\dfrac58\text{ inches}$

Width of box is not taken up by pencils = $2\dfrac58\text{ inches}$

Width of each pencil = (Width of seven pencils ) ÷ 7

$=\dfrac{21}{8}\div7\\\\=\dfrac{21}{8}\times\dfrac17\\\\=\dfrac38\text{ inches}$

Width of each pencil $=\dfrac38\text{ inches}$

3 0

2 years ago

Read 2 more answers

(-2)-(-3/4) keep in improper form

Elena-2011 [213]

5/4 or 1 1/4

Solve -2 + 3/4= 1.25

3 0

3 years ago

At Charles School, 1/5 of the 75 students in seventh grade play in the jazz band. how many seventh graders play in the jazz band

My name is Ann [436]

Answer: 15

Step-by-step explanation:

8 0

2 years ago