Question

cuanto vale X y A
1: 2x -3+x=7
2: 5y - 2+ 4 = 3y
3: 4a -5+ 2a = 3
ayúdenme

Answer 1

$a)2x - 3 + x = 7 \\ 3x = 7 + 3 \\ 3x = 10 \\ x = \frac{10}{3} \\ b)5y - 2 + 4 = 3y \\ 5y - 3y = + 2 - 4 \\ 2y = - 2 \\ y = - 1 \\ c)4a - 5 + 2a = 3 \\ 6a = 8 \\ a = \frac{8}{6} \\ a = \frac{4}{3}$