1) 21x = 462x = 462 / 21x = 22
2) 16x + 28x - 542 = 394644x - 542 = 394644x = 3946 + 54244x = 4488x = 4488 / 44x = 102
3) 247x = 9386x = 9386 / 247x = 38
1) 21x = 462
x = 462 / 21
x = 22
2) 16x + 28x - 542 = 3946
44x - 542 = 3946
44x = 3946 + 542
44x = 4488
x = 4488 / 44
x = 102
3) 247x = 9386
x = 9386 / 247
x = 38