Question

1)16x-3=102-5x
2) (13+2x)/(4x+1)=3/4

Answer 1

1.- 16x+5x=102+3
21x=105
x=105÷21
x=5

2.-

Answer 2

16x-3=102-5x
16x+5x = 102 + 3
21x = 105
x=105/21
x = 5

$\frac{13+2x}{4x+1} = \frac{3}{4}$

4(13+2x) = 3(4x+1)
52 +8x = 12x + 3
52-3= 12x -8x
49 = 4x 
49/4 = x