Question

resolva as equações
a) 5x+23=98

b) 8x+4-5.(3-2x)=25

Answer 1

a)
5x + 23 = 98
5x = 98 - 23
5x = 75
x = 75/5
x = 15

b)  Aplicar distributiva

8x + 4 - 5 (3 - 2x) = 25
8x + 4 - 15 + 10x = 25
8x + 10x - 11 = 25
18x = 25 + 11
18x = 36
x = 36/18   
x = 2