Question

a) 45x=90
b)35-7x=35
c)-x=20+x
d)11x+13=-9
e)35-y=4y sendo U=Z

Answer 1

a) x=2
b) -7x=70
x = -10
c) -2x=20
x=-10
d) 11x= -22
x=-2
e) 35= 5y
y=7