Question

Ayuda urgente 5a-1=9....4×-2=2....5×=8×-15......y-5=3y-25....8×+9-12×=4×-12-5×

Answer 1

5a=10
a=2
4x=4
x=1
-3x=-15
x=5
-2y=-20
y=10
-3x=-21
x=7