Question

4) Resolva as equações de 1° grau:
a) 5x = 15
b) 4x = -12
c) X-9 = 10
d) 7x-5=9

e) + 3 = 8​

Answer 1

a) x = 15/5
x = 3

b) x = (-12)/4
x = -3

c) x = 10+9
x = 19

d) 7x = 5+9
x = 14/7
x = 2

e) x + 3 = 8
x = 8 - 3
x = 5