Question

X.7+13÷3=30 qual o valor do x

Answer 1

$7x+ \frac{13}{3} =30 \\\\ 7x+ 13{} =30.3 \\ \\ 7x{} =90 -13\\ \\ 7x{} =77\\ \\x = \frac{77}{7} \\\\x=11$