segunda tarea

Resolver las siguientes ecuaciones:
1.- 3/7 + 2/5 -(16/8)x=2.8
X= -3
0.4+0.4-2=2.8
2.- 15-17+33x-9x=118
X= 5
-2+165-45=118
3.- ((9/5)(5/8))x + (2/3)x +54=6.072
X= -4
(1.8)(0.6)(-4)=-4.32+2.4+54=6.072
4.- (18/7)/((17/5)(8/9))x +19=19.459
X= 2
(2.5)/((3.4)(0.8))x+19
2.5/5.44+19
0.459+19=19.459
5.- (22/16)-17/9+33x-67-6x=-123.5756
X = -2
(1.37)-1.88-66-67+12
-2.5756-66-67+12
-123.5756
6.- 23x-185x+215x-13+44= 402
X= 7
161-1295+1505-13+44=
=402
7.- 42/15 + 33/9 -28x = -217.6
X= 8

8.- (25/4)(6/9) + 1/2-16x-89+46= 41.22
x= -5
(6.2)(0.6)=3.72+0.5+80-89+46
3.72+0.5+80-89+46=41.22
9.- ((24/5)/(19/7))x +13x-157x+79= -864.74
X= 7
64.26+91-1099+79=-864.74
10.- ((156/37)/(456/89))x +23x-179= -179
X= 0
(4.2)/(5.1)=(0.8)(0)=0+0-179