Question

resolva as equações sendo conjunto universo dos números a)2×-x=5-7
b)3x+230=-130
c)8x-150=3x-400
d)5x-8=x-24
e)6(34+2x)=2(5x-50)
f)3(5x-180+45)=-4(x-72)

Answer 1

a)2x-x=5-7

x=-2

b)3x+230=-130

3x=-130-230

3x=100

x=100/3

x=33,3

c)8x-150=3x-400

8x-3x=-400+150

5x=-250

x=-250/5

x=-50