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Shkiper50 [21]
2 years ago
11

The sum of the following algebraic expression 2x + 15, 7-8x and 3x - 41 is 30 find the value of x..​

Mathematics
2 answers:
Ksju [112]2 years ago
3 0

\\  \tt  \longmapsto2x + 15 + 7 - 8x + 3x - 41 = 30 \\   \\  \tt  \longmapsto 2x - 8x + 3x + 15 + 7 - 41 = 30 \\  \\  \tt  \longmapsto  - 3x - 19 = 30 \\  \\  \tt  \longmapsto 3x + 19 =  - 30 \\  \\  \tt  \longmapsto 3x =  - 30 -19 \\  \\  \tt  \longmapsto 3x =  - 49 \\  \\  \tt  \longmapsto x = - \frac{49}{3}

andrey2020 [161]2 years ago
3 0

Answer:

Step-by-step explanation:

2x + 15 + 7 - 8x + 3x - 41 = 30

<u>2x  - 8x + 3x</u> +<u> 15 + 7 - 41</u> = 30

Combine like terms

-3x - 19 = 30

Add 19 to both sides

-3x = 30 + 19

-3x = 49

Divide both sides by (-3)

x = 49/-3

x = -16\frac{1}{3}

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