Question

dau 99 pct
x x(907-368)=907
a+(902-836)=666
b+(416-363)=200
x-(125-90)=462
(405-x)-189=299
(850-x)-390=160
(380+190)-x=138
(136+x)-125=440
x-(135+257)=236
x-(106+108)=603
(x-125)-152=388
(x-36)+669=993

Answer 1

x x ( 907 - 368 ) = 907
x x 539 = 907
x = 907 : 539 
x = 1, 68

a + ( 902 - 836 ) = 902
a + 66 = 666
a = 666 - 66
a = 600

b + ( 416 - 363 ) = 200
b + 53 = 200
b = 200 - 53
b = 147

x - ( 125 - 90 ) = 462
x - 35 = 462
x = 462 + 35
x = 497

( 405 - x ) - 189 = 299
405 - x = 299 + 189
405 - x = 488
x = 488 - 405
x = 83

( 850 - x ) - 390 = 160
850 - x = 160 + 390
850 - x = 550
x = 850 - 550
x = 300

( 380 + 190 ) - x = 138
570 - x = 138
x = 570 - 138
x = 432

(136 + x ) - 125 = 440
136 + x = 440 + 125
136 + x = 565
x = 565 - 136
x = 429

x - ( 135 + 257 ) = 236
x - 392 = 236
x = 236 + 392
x = 628

x - ( 106 + 108 ) = 603
x - 214 = 603
x = 603 + 214
x = 817

( x - 125 ) - 152 = 388
x - 125 = 388 + 152
x - 125 = 540
x = 540 + 125
x = 665

( x - 36 ) + 669 = 993
x - 36 = 993 - 669
x - 36 = 324
x = 324 + 36
x = 360