1) 5x + (3x - 7) = 9;
5x + 3x - 7 = 9;
5x + 3x = 9 + 7;
8x = 16;
x = 2;
2) 3y - (5 - y) = 11;
3y - 5 + y = 11;
3y + y = 11 + 5;
4y = 16;
y = 4.
1) 5x + (3x - 7) = 9;
5x + 3x - 7 = 9;
5x + 3x = 9 + 7;
8x = 16;
x = 2;
2) 3y - (5 - y) = 11;
3y - 5 + y = 11;
3y + y = 11 + 5;
4y = 16;
y = 4.