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4 years ago

How do I solve this equation 5x+7=3x-5

Mathematics

2 answers:

Leona [35]4 years ago

8 0

Answer:

The answer above is correct i got it right

algol134 years ago

6 0

Answer:

x = -6

Step-by-step explanation:

Simplifying

5x + 7 = 3x + -5

Reorder the terms:

7 + 5x = 3x + -5

Reorder the terms:

7 + 5x = -5 + 3x

Solving

7 + 5x = -5 + 3x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-3x' to each side of the equation.

7 + 5x + -3x = -5 + 3x + -3x

Combine like terms: 5x + -3x = 2x

7 + 2x = -5 + 3x + -3x

Combine like terms: 3x + -3x = 0

7 + 2x = -5 + 0

7 + 2x = -5

Add '-7' to each side of the equation.

7 + -7 + 2x = -5 + -7

Combine like terms: 7 + -7 = 0

0 + 2x = -5 + -7

2x = -5 + -7

Combine like terms: -5 + -7 = -12

2x = -12

Divide each side by '2'.

x = -6

Simplifying

x = -6

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fomenos

Answer:

-189

Step-by-step explanation:

You substitute the x for -7 and put it into a calculator.

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3 years ago

I need help with these questions

jolli1 [7]

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8 0

4 years ago

Austin began a repiping job with 26 yards, 2 feet, 5 inches of pipe. When he finished the job, he had 13 yards, 2 feet, 7 inches

My name is Ann [436]

Answer:

<em>He used 12.944... yards of pipe for the repiping job.</em>

Step-by-step explanation:

We know that, 1 yard = 3 feet and 1 feet = 12 inches.

That means, 1 yard = (3×12) inches = 36 inches.

So, 1 feet = $\frac{1}{3}$ yard and 1 inch = $\frac{1}{36}$ yard.

Thus, 26 yards, 2 feet and 5 inches $=(26+\frac{2}{3}+\frac{5}{36}) yards = 26.805... yards$

and 13 yards, 2 feet and 7 inches $=(13+\frac{2}{3}+\frac{7}{36}) yards = 13.861... yards$

So Austin began a repiping job with 26.805... yards of pipe and when he finshed the job, he had 13.861... yards.

So, the length of the pipe he used for the repiping job will be: $(26.805...-13.861...) yards = 12.944... yards$

8 0

4 years ago

Read 2 more answers

Rafael is putting money into a savings account. he starts with $650 in the savings account, and each week he adds $40.

mezya [45]

Answer:

Equation is S = 40w + 650

So S = 40(16) + 650

S = 640 + 650

S = $1,290

Step-by-step explanation:

this because each week (W) he adds $40 and the $650 is the initial amount in his savings account. So since 16 weeks went by, just multiply that by 40 and add 650 to that product.

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3 years ago

Find the value of x that makes m || n

USPshnik [31]

Answer:

x = 133

Step-by-step explanation:

x + 14 = 147

x (+ 14 - 14) = 147 - 14

x = 133

7 0

3 years ago

Read 2 more answers