Question

ecuaciones:(solo respuesta plisss)
10x-2x-15=30+3x
15x-71+23x=2513
-3(2a+7)+(-5a+6)-8(1--a)-(a-3)=0
6x+7-2x=91-2x
gracias v:

Answer 1

A) 10x - 2x - 15 = 30 + 3x
10x - 2x - 3x = 30 + 15
10x - 5x = 45
5x = 45
x = 45 / 5
x = 9
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B) 15x-71+23x=2513
15x + 23x = 2513 + 71
38x = 2582
x = 2582 / 38
x = 67, 95
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C) -3(2a+7)+(-5a+6)-8(1--a)-(a-3) = 0
- 6a - 21 - 5a + 6 - 8 + 8a - a + 3 = 0
- 6a - 5a + 8a - a - 21 + 6 - 8 + 3 = 0
- 12a + 8a - 29 + 9 = 0
4a - 20 = 0
4a = 20
a = 20 / 4
a = 5

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D) 6x+7-2x = 91-2x
6x - 2x + 2x = - 7 + 91
8x - 2x = -7 + 91
6x = 84
x = 84 / 6
x = 14
Espero que te sirva la respuesta