The solutions to the given equations are
m = - 30/7
v = 8.8
x = -3
u = 4
a = -3/70
Solving linear equations
From the question, we are to determine the values of the variables in the equations
7/8m - 4/7 - 5/6m = -3/4
7/8m - 5/6m = -3/4 + 4/7
(21m -20m)/24 = (-21 + 16)/28
m/24 = -5/28
m = (-5×24)/28
m = -120/28
m = - 30/7
4.3v + 10.75 - 4v = 8.11
4.3v - 4v = 8.11 - 10.75
0.3v = -2.64
v = -2.64/0.3
v = 8.8
9/7 + 9/7x - 6/7x = 0
9/7x - 6/7x = -9/7
(9x - 6x)/7 = -9/7
3x/7 = -9/7
3x × 7 = -9 × 7
21x = -63
x = -63/21
x = -3
6.9u - 2 - 3.2u - 10 = 2.8
6.9u - 3.2u = 2.8 + 2 + 10
3.7u = 14.8
u = 14.8/3.7
u = 4
8/5 = -4a + 7/5 - 2/3a
8/5 - 7/5 = -4a - 2/3a
(8-7)/5 = -14/3 a
1/5 = -14/3 a
-14a × 5 = 1 × 3
-70a = 3
a = 3 / -70
a = -3/70
Hence, the solutions to the given equations are
m = - 30/7
v = 8.8
x = -3
u = 4
a = -3/70
Learn more on Solving linear equations here: https://brainly.com/question/1682776
#SPJ1
