Question

2 + 4 - 3 = 22;
7 - 3x = 4x - 9;
10y - 3 = 5 + 3y.

Answer 1

2.

7 - 3x = 4x - 9

-3x - 4x = -9 - 7

-7x = -16

x = $\frac{16}{7}$

3.

10y - 3 = 5 + 3y

10y - 3y = 5 + 3

7y = 8

y = $\frac{8}{7}$