1) 21(18+х)=714378 + 21x = 71421x = 714 - 37821x = 336x = 336/21x = 16
2) 16(4x-34)=60864x - 544 = 60864x = 608 + 54464x = 1152x = 1152/64x = 18
3) 12(152 + 19x) = 20521824 + 228x = 2052228x = 2052 - 1824228x = 228x = 228/228x = 1
4) (152x + 32)*6 = 192912x + 192 = 192912x = 0x = 0/912x = 0
1) 21(18+х)=714
378 + 21x = 714
21x = 714 - 378
21x = 336
x = 336/21
x = 16
2) 16(4x-34)=608
64x - 544 = 608
64x = 608 + 544
64x = 1152
x = 1152/64
x = 18
3) 12(152 + 19x) = 2052
1824 + 228x = 2052
228x = 2052 - 1824
228x = 228
x = 228/228
x = 1
4) (152x + 32)*6 = 192
912x + 192 = 192
912x = 0
x = 0/912
x = 0