Question

10а-200-76+2а=200-5а (х+15)-8=17 (3в+5в)·18=14+130 7х+х-2-50=50+40+40+24+26-40х (9х+7х)·6=288 6-4х+15х=390-25х

Answer 1

10а-200-76+2а=200-5а
10а+2а+5а=200+200+76
17а=476
а=28

(х+15)-8=17
х=17-15+8
х=10

(3в+5в)·18=14+130
54b+90b=14+130
144б=144
б=1



7х+х-2-50=50+40+40+24+26-40х
48х=192
x=4



(9х+7х)·6=288
54x+42х=288
96x=288
x=3



6-4х+15х=390-25х
-4х+15х+25х=390+6
36х=396
х=11