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1)resolver las siguientes ecuaciones linealesa)x + 9x = 90b) - 2x + 1 = 3c)2?

1)resolver las siguientes ecuaciones lineales a)x + 9x = 90 b) - 2x + 1 = 3 c)2. (3x - 2) - (x + 3) = 8 d)21 - 7x = 41x - 123 e)5. (20 - x) = 4. (2x - 1) f)9x + 25 = 4x + 65 g)5m - 3(2 - m) = 1 - (m + 2) h)x + 3(x - 1) = 6 - 4(2x + 3).

Calculadora interactiva

ax² + bx + c = 0

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A)x + 9x = 90

10x = 90

x = 90 / 10

x = 9

b) - 2x + 1 = 3 - 2x = 3 - 1 - 2x = 2

x = - 2 / 2

x = - 1

c)2(3x - 2) - (x + 3) = 8

6x - 4 - x - 3 = 8

5x = 8 + 7

5x = 15

x = 15 / 5

x = 3

d)21 - 7x = 41x - 123 - 7x - 41x = - 123 - 21 - 48x = - 144

x = 144 / 48

x = 3

e)5(20 - x) = 4(2x - 1)

100 - 5x = 8x - 4 - 5x - 8x = - 4 - 100 - 13x = - 104

x = 104 / 13

x = 8

f)9x + 25 = 4x + 65

9x - 4x = 65 - 25

5x = 40

x = 40 / 5

x = 8

g)5m - 3(2 - m) = 1 - (m + 2)

5m - 6 + 3m = 1 - m - 2

8m + m = - 1 + 6

9m = 5

m = 5 / 9

h)x + 3(x - 1) = 6 - 4(2x + 3)

x + 3x - 3 = 6 - 8x - 12

4x + 8x = - 6 + 3

12x = - 3

x = - 3 / 12

x = - 4.