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Oduvanchick [21]
3 years ago
11

5x - 10 + 65 = 90 what is the value of x?

Mathematics
2 answers:
ipn [44]3 years ago
6 0

Answer:

x = 7

Step-by-step explanation:

You must perform the opposite on each side.

5x - 10 + 65 = 90

5x - 10 + 65 - 65 = 90 - 65

5x - 10 + 10 = 25 + 10

5x / 5 = 35 / 5

x = 7

5 x 7 - 10 + 65 = 90

35 - 10 + 65 = 90

25 + 65 = 90

ki77a [65]3 years ago
5 0

Answer:

x =7

Step-by-step explanation:

Solve for x:

5 x - 10 + 65 = 90

Add like terms. 65 - 10 = 55:

5 x + 55 = 90

Subtract 55 from both sides:

5 x + (55 - 55) = 90 - 55

55 - 55 = 0:

5 x = 90 - 55

90 - 55 = 35:

5 x = 35

Divide both sides of 5 x = 35 by 5:

(5 x)/5 = 35/5

5/5 = 1:

x = 35/5

The gcd of 35 and 5 is 5, so 35/5 = (5×7)/(5×1) = 5/5×7 = 7:

Answer:  x = 7

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