Now what methods can we use to get the solution of the system of equations {2 [x + 5] - 5 [Y-3] = - 4,7 [x + 5] + 2 [Y-3] = 25}? Please compare these methods

Now what methods can we use to get the solution of the system of equations {2 [x + 5] - 5 [Y-3] = - 4,7 [x + 5] + 2 [Y-3] = 25}? Please compare these methods

Simplification
1)、2x-5y=-29
2) 7x + 2Y = - 4
1) 5-2)
-19.5y=-97.5
y=5
Substitute x = - 2

Solve the equation 6 / 7-x = 1 / 5 x + 1 / 6 = 3 / 4 1 / 2 + x = 2 / 3 x-3 / 8 = 3 / 16

6\7-x=1\5x 1\5x+x=5\7 6\5x=6\7 x=5\7
x+1\6=3\4 x=3\4-1\6 x=7\12
1\2+x=2\3 x=2\3-1\2 x=1\6
x-3\8=3\16 x=3\16+3\8 x=3\16

The equation (1) 14 + x = 1112 (2) x-316 = 58 (3) x + (& nbsp; 13 + 34) = 2

14+x=1112， 14+x-14=1112−14，      x=1112-14，      x=1112-312，      x=23；（2）x-316=58，x−316+316=58+316， &nb...

Solution equation: x ^ 2 = 8 ^ 2 + (16-x) ^ 2

x^2=8^2+(16-x)^2
256-32x+x^2+64=x^2
32x=320
x=10