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maxonik [38]
3 years ago
9

Solve for x: 15x + 121 = 256

Mathematics
2 answers:
Lady_Fox [76]3 years ago
4 0

Answer:

Step-by-step explanation:

15x + 121 = 256 the answer is x = 9

4x + 8 > 2x - 10 the answer is x > -9

5x + 7 = 42 the answer is x = 7

Romashka-Z-Leto [24]3 years ago
3 0

Answer:

x=9, x>-9, x=7

Step-by-step explanation:

15x + 121 = 256 \\ 15x = 256 - 121 \\ 15x = 135 \\  \frac{15x}{15}  =  \frac{135}{15}  \\ x = 9

4x + 8 > 2x - 10 \\ 4x - 2x  >  - 10 - 8 \\ 2x =  - 18 \\  \frac{2x}{2}  =   \frac{ - 18}{2}  \\ x >  - 9

5x + 7 = 42 \\ 5x = 42 - 7 \\ 5x = 35 \\  \frac{5x}{5}  =  \frac{35}{5}  \\ x = 7

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