1) 0,1a - 0,1 = 0,15a - 5,0,1a - 0,15a = -5,1 + 0,-0,05a = -a = -5 / -0,0a = 100
2) 2x - 3/5 = 3 - 2x/2x + 2x/7 = 3 + 3/14x + 2x = 15 + 16x = 1x = 18 / 1x = 1.125
3) (-12 1/2)(-4/5) + 12,75 + (-2/13)(-3,9-25/2 (-4/5) + 12,75 + 6/13 3,(100/10) / (2/5) + 12,75 + 6/13 3,(100/10) / (2/5) + 12,75 + 6/13 39/150/1 * 5/2 + 12,75 + 234 / 13250/2 + 12,75 + 234 / 13125 + 12,75 + 234 / 13137,75 + 234 / 13137,75 + 1,139,55
1) 0,1a - 0,1 = 0,15a - 5,
0,1a - 0,15a = -5,1 + 0,
-0,05a = -
a = -5 / -0,0
a = 100
2) 2x - 3/5 = 3 - 2x/
2x + 2x/7 = 3 + 3/
14x + 2x = 15 +
16x = 1
x = 18 / 1
x = 1.125
3) (-12 1/2)(-4/5) + 12,75 + (-2/13)(-3,9
-25/2 (-4/5) + 12,75 + 6/13 3,
(100/10) / (2/5) + 12,75 + 6/13 3,
(100/10) / (2/5) + 12,75 + 6/13 39/1
50/1 * 5/2 + 12,75 + 234 / 13
250/2 + 12,75 + 234 / 13
125 + 12,75 + 234 / 13
137,75 + 234 / 13
137,75 + 1,
139,55