1) 3x + 9x + 352 = 526012x + 352 = 526012x = 5260 - 35212x = 4908x = 4908 / 12x = 409
2) 17(2x - 15) + 82 = 319334x - 255 + 82 = 319334x - 173 = 319334x = 3193 + 17334x = 3366x = 3366 / 34x = 99
3) 21x - 5x - 84 = 94016x - 84 = 94016x = 940 + 8416x = 1024x = 1024 / 16x = 64
4) (3x + 41) * 28 - 248 = 300084x + 1148 - 248 = 300084x + 900 = 300084x = 2100x = 2100 / 84x = 25
1) 3x + 9x + 352 = 5260
12x + 352 = 5260
12x = 5260 - 352
12x = 4908
x = 4908 / 12
x = 409
2) 17(2x - 15) + 82 = 3193
34x - 255 + 82 = 3193
34x - 173 = 3193
34x = 3193 + 173
34x = 3366
x = 3366 / 34
x = 99
3) 21x - 5x - 84 = 940
16x - 84 = 940
16x = 940 + 84
16x = 1024
x = 1024 / 16
x = 64
4) (3x + 41) * 28 - 248 = 3000
84x + 1148 - 248 = 3000
84x + 900 = 3000
84x = 2100
x = 2100 / 84
x = 25