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Respondido

4- Resolva as equações
a) 10x9x+2x=2-3x
b) 4x-4-5x=-6+90
c) 2-3x=-2x+12-3x
d) 7(x-5)=3(x+1)
e) 3(x-2)=4(-x+3)
f) 13+4(2x-1)=5(x+2)
g) 4(x+5)+3(x+5)=21​

Resposta :

04-c) 2-3x=-2x+12-3x
-3x+2x+3x=12-2
2x=10
x=10/2
x=5

d) 7(x-5)=3(x+1)
7x-35=3x+3
7x-3x=3+35
4x=38
x=38/4
x= 9,5

e) 3(x-2)=4(-x+3)
3x-6=-4x+12
3x+4x=12+6
7x=18
x=18/7
x= 2,57

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