Question

4 пожалуйста срочно ))))

Answer 1

$\frac{1}{9} (3- \frac{3}{4} x)=(x- \frac{5}{7}) \frac{7}{10} \\ \frac{1}{3} - \frac{1}{12}x= \frac{7}{10} x- \frac{1}{2} \\ \frac{7}{10}x+ \frac{1}{12}x = \frac{1}{3}+ \frac{1}{2} \\ \frac{42+5}{60}x= \frac{2+3}{6} \\ \frac{47}{60} x= \frac{5}{6} \\ x= \frac{5}{6} * \frac{60}{47} \\ x= \frac{50}{47} \\ x=1 \frac{3}{47}$
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7(x-4)-2(5-3x)=0
7x-28-10+6x=0
13x-38=0
13x=38
x=38:13
x=$2 \frac{12}{13}$
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