Question

3+0.1x=4 
4*(x-7)=3x+5
2u-3*(7-2u)=3
С подробным решением!!ЗАРАНЕЕ СПАСИБО!!!!

Answer 1

1)) 0.1х = 4-3
0.1х = 1
х = 1 / 0.1 = 1/ (1/10) = 1 *10 = 10
2)) 4х - 28 = 3х + 5
4х-3х = 28+5
х = 33
3)) 2u - 21 + 6u = 3
8u = 21+3
u = 24/8 = 3