1) x = 1302 + 205x = 1507
2) x = 5000 - 1290x = 3710
3) 1050/a = 31050 = 3aa = 1050/3a = 350
4) 2x = 1112x = 1112 / 2x = 556
5) x + x - 10 = 202x - 10 = 202x = 30x = 30 / 2x = 15
6) (x + 5) + 15 = 30x + 5 + 15 = 30x + 20 = 30x = 30 - 20x = 10
1) x = 1302 + 205
x = 1507
2) x = 5000 - 1290
x = 3710
3) 1050/a = 3
1050 = 3a
a = 1050/3
a = 350
4) 2x = 1112
x = 1112 / 2
x = 556
5) x + x - 10 = 20
2x - 10 = 20
2x = 30
x = 30 / 2
x = 15
6) (x + 5) + 15 = 30
x + 5 + 15 = 30
x + 20 = 30
x = 30 - 20
x = 10