Question

resolva em R as senguintes equações do 1 grau: b) 5. (3-x)+ 2.(x+1)=-x+5
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Answer 1

5(3 - x) + 2(x + 1)= - x + 5

15 - 5x + 2x + 2= - x + 5

- 5x + 2x + x= 5 - 15 - 2

- 2x= - 12 >>.(-1)

2x= 12

x= 12/2

x= 6