Question

13х+9х+13=321;
(7х-х)÷5=180 ​

Answer 1

13x+9x+13=321

22x=321-13

22x=308

x=14

$\frac{7x - x}{5} = \frac{180}{1} \\ 7x - x = 900 \\ 6x = 900 \\ x = 150$

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