5x+7=3x+11
5x-3x=11-7
2x=4
x=4÷2
x=2
Comprobamos:
5(2)+7=3(2)+11
10+7=6+11
17=17
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5x+7=3x+11
5x-3x=11-7
2x=4
x=4÷2
x=2
Comprobamos:
5(2)+7=3(2)+11
10+7=6+11
17=17