Question

2x sobre 4 = 10 sobre 28

Answer 1

Resposta:

${2x\over4}={10\over28}\\ \\ multiplica~~cruzado\\ \\ 2x.(28)=4.(10)\\ \\ 56x=40\\ \\ x={40\over56}~~~simplificando~~{40:8\over56:8}={5\over7}\\ \\ x={5\over7}$