76×x-25=306+49; 9×x+36=67-2; 25x+15x=40×25

Question

76×x-25=306+49; 9×x+36=67-2; 25x+15x=40×25

Answer 1

76×x-25=306+49
76*x=306+49+25
76×x=380
x=380/76
x=5

Answer 2

76х=306+49+25
76х=380
Х=380/76
Х=5
9х+36=67-2
9х=67-2-36
9х=29
Х=29/9
Х=3,2
25х+15х=40•25
40х=1000
Х=1000/40
Х=25