3 years ago

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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