Question

Qual é a resposta da equação 6 (x+5) +3(x-5) =4 (x+5)

Answer 1

Resposta:

6(+5)+3(−5)=4(+5)

6+30+3(−5)=4(+5)

6+30+3−15=4(+5)

6+15+3=4(+5)

9+15=4(+5)

9+15=4+20

9+15−15=4+20−15

9=4+5

5=5

=1