Question

Help meeee please
2 задание 1498

Answer 1

1)x-y=7
y=7-x
2)5x-3(7-x)=1
5x-21+3x=1
8x=1+21
8x=22
x=
$\frac{22}{8}$
$\frac{22}{8} - y = 7 \\ - y = \frac{22}{8} + 7$