(16x-10x+3x)*4=132 (17x-8x+3):7=12
(16x-10x+3x)*4=132
9x * 4 = 132
9x = 132 : 4
9x = 33
x = 33 : 9
x = 3 2/3
(17x-8x+3):7=12
9x + 3 = 12 * 7
9x + 3 = 84
9x = 84 - 3
9x = 81
x = 81 : 9
x = 9
а 1 точно правильное