1. Resuelve los siguientes ejercicios:
1)-5-10(2 + 4x)=
2) 9? +3(7x - 20) -
3) 2 - 9[6 - 3x + 2(x - 2)] =
4) 72 - 2[9x - 5(10 - 8x)]-
5) 9b-6+6[5b - 11(2 - 3b)] + 52 =
6) 103 - 6 + 2[9x - 10 - (3 - *)] - 92 -
7) 8° - 11 + 5[7x + 2 - 2(7 + 3x)] + 72 =
8) 7x + 42 - [102 + 5(2x - 3) + 7(2x - 1)] =
Respuestas a la pregunta
Respuesta:
1)-5-10(2 + 4x)= 2) 9²+3(7x - 20) - 3) 2³ - 9[6 - 3x + 2(x - 2)] = -5-10(2 + 4x)=0 81+21X-60=0 8-9 [6-3X + 2X - 4 ] =0 -25 - 40X=0 21+21X=0 8 - 9[ 2 - X] =0
-25 = 40X 21X= -21 8-18+9X=0
-25/40=X X= -21/21 -10+9X = 0
-5/8=X X= -1 9X=10
X=10/9
4) 72 - 2[9x - 5(10 - 8x)]- 5) 9b-6+6[5b - 11(2 - 3b)] + 52 =
49-2[9X - 50 + 40X] = 0 9b-6+6[5b-22+33b] + 25=0
49-2[49X - 50 ] = 0 9b-6+6[38b-22] + 25=0
49 - 98 X - 100 = 0 9b-6+228b-132+25=0
- 98 X- 52 = 0 237b-113=0
98X = 52 237b=113
X=22/-98 b=113/237
X= -26 /49
6) 10³-6+2[9x-10-3-X]-92=
696
7) 8³- 11 + 5[7x + 2 - 2(7 + 3x)] +7² =
8³ - 11 + 5 [7x + 2 -2 (7 + 3x )] + 7²
512 - 11 + 5[7x + 2 -2 (7 + 3x )] + 49
501 + 5[7x + 2 -14 - 6x] + 49
501 + 5[x - 12] + 49
550 + 5x - 60
490 + 5x
8) 7x + 4² - [10²+ 5(2x - 3) + 7(2x - 1)] =
7x + 4² - [10² + 5 (2x - 3) + 7 (2x-1)]
- [10² + 5 (2x - 3) + 7 (2x - 1)]
- [24x + 78]
7x + 4² - [24x + 78]
7x + 16 - [24x + 78]
7x + 16 - 24x - 78
- 17x - 62