Question

resolver la siguiente ecuacion:
a- (5/9)t+2 [(11/9)t-4]=28
b- 0.2(4-0.5x)-0.7(-0.3x-0.2)= -0.8

Answer 1

Respuesta:

12 y -15.818

Explicación paso a paso:

(5/9)t + 2((11/9)t - 4) = 28

(5/9)t + 2(11/9)t - 4 = 28

(5/9)t + (22/9)t - 8 = 28

(5/9 + 22/9)t - 8 = 28

3t = 36

t = 12

0.2 (4 - 0.5x) - 0.7(-0.3x -0.2) = -0.8

0.8 - 0.1x + 0.21x +0.14 = -0.8

0.11x + 0.94 = -0.8

0.11x = 1.74

x= -15.818