Решите уравнения. Математика.

Question

5x  +  4x  –  x     =   120  
2)     10y  +  2y  –  5y  +  27    =   202
3)     2x  +  4x  •  2  –  x     =   270
4)     7y  +  2y  •  13  +  23  –   23y  =   173 
5) 4х + 4х = 424
б) 10к – к = 702
7) 3х + 7х + 18 = 178
8) 6у – 2у + 25 = 65
9) 15у – 8у = 714;
10) 9z + z = 900;

idiot_139 · Accepted Answer

10. Z= 90

faina_golubchikova · Answer

5x + 4x – x = 120 
8х=120
х=15
2) 10y + 2y – 5y + 27 = 202
7у=175
у=25
3) 2x + 4x • 2 – x = 270
9х=270
х=30
4) 7y + 2y • 13 + 23 – 23y = 173
10у=150
у=15

danin_a_a · Answer

1)5х+4х-х=120
8х=120
х=15
2)10y+2y-5y+27=202
7y=202-27
7y=175
y=25
3)5х=270÷2
5х=135
х=27
4)33y+23-23y=173
10y=150
y=15
По верхним делай остальные