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4 years ago

Solve for x!

2 answers:

7 0

First multiply by 9x. 7 = 378x. Divide each side by 378 to isolate x. 1/54 = x. Check your answer: 7/(1/6) does indeed equal 42.

attashe74 [19]4 years ago

6 0

I'm assuming you meant (7/9)x = 42.

If that's correct, then we can quickly and easily solve for x by multiplying both sides of this equation by 9/7:

(9/7)(7/9)x = (9/7)(42) = 54. x = 54

You might be interested in

A construction company charges $18 per hour for debris removal, plus a one time fee for the use of the trash dumpster. the total

Wewaii [24]

One time fee for the trash dumpster is $75.

Step-by-step explanation:

Cost of debris removal = $18 per hour

Total number of hours = 8

Let,

Total number of hours = x

One time fee of trash dumpster = y

According to given statement;

18x+y=219

As we know the number of hours, therefore,

$18(8)+y=219\\144+y=219\\Subtracting\ 144\ from\ both\ sides\\144-144+y=219-144\\y=75$

One time fee for the trash dumpster is $75.

Keywords: linear equations, Subtraction

Learn more about linear equations at:

#LearnwithBrainly

5 0

3 years ago

<img src="https://tex.z-dn.net/?f=5x%20-%2015%20%2B%20130%20%3D%20x%20-%202%20%20" id="TexFormula1" title="5x - 15 + 130 = x - 2

olga nikolaevna [1]

Answer:

x=-117/4

Step-by-step explanation:

5x-15+130=x-2

5x-x+115=-2

4x+115=-2

4x=-2-115

4x=-117

x=-117/4

6 0

3 years ago

Maria made 5 withdrawals from her bank account of $35 each . What was the total change to her bank account?

Vladimir79 [104]

Answer:

135

Step-by-step explanation:

5 times 35 equals 135

4 0

4 years ago

Read 2 more answers

Simplify the following

Mashutka [201]

Answer:

60√3 or 103.923

5 0

3 years ago

Will crown the correct answers brainliest 3x

Solnce55 [7]

Answer :

(1) $\frac{1}{x}+\frac{1}{y}=\frac{y+x}{xy}$

(2) $\frac{1}{5x}+\frac{1}{3y}=\frac{3y+5x}{15xy}$

(3) $\frac{1}{7x}-\frac{1}{2y}=\frac{2y-7x}{14xy}$

(4) $\frac{2}{5x}+\frac{3}{7y}=\frac{6y+15x}{21xy}$

(5) $\frac{7}{11x}-\frac{1}{33y}=\frac{231y-11x}{363xy}$

(6) $\frac{1}{2x}+\frac{3}{x}-\frac{1}{7y}=\frac{7y+42y-2x}{14xy}$

Step-by-step explanation :

(1) The given expression is: $\frac{1}{x}+\frac{1}{y}$

$\frac{1}{x}+\frac{1}{y}=\frac{y+x}{xy}$

(2) The given expression is: $\frac{1}{5x}+\frac{1}{3y}$

$\frac{1}{5x}+\frac{1}{3y}=\frac{3y+5x}{(5x)\times (3y)}=\frac{3y+5x}{15xy}$

(3) The given expression is: $\frac{1}{7x}-\frac{1}{2y}$

$\frac{1}{7x}-\frac{1}{2y}=\frac{2y-7x}{(7x)\times (2y)}=\frac{2y-7x}{14xy}$

(4) The given expression is: $\frac{2}{5x}+\frac{3}{7y}$

$\frac{2}{5x}+\frac{3}{7y}=\frac{(2\times 3y)+(3\times 5x)}{(5x)\times (7y)}=\frac{6y+15x}{21xy}$

(5) The given expression is: $\frac{7}{11x}-\frac{1}{33y}$

$\frac{7}{11x}-\frac{1}{33y}=\frac{(7\times 33y)-(1\times 11x)}{(11x)\times (33y)}=\frac{231y-11x}{363xy}$

(6) The given expression is: $\frac{1}{2x}+\frac{3}{x}-\frac{1}{7y}$

$\frac{1}{2x}+\frac{3}{x}-\frac{1}{7y}=\frac{(x\times 7y)+(3\times 2x\times 7y)-(2x\times x)}{(2x)\times (x)\times (7y)}=\frac{7xy+42xy-2x^2}{14x^2y}=\frac{7y+42y-2x}{14xy}$

7 0

3 years ago