1) 12х - 35 + 7х = 98; 3) 13 (х + 6 ) - 72 = 123;
2) 25 (× + 1 ) -16 = 59; 4) 77 + 8 (х - 5 ) = 125.
помогите пожалуйста!
2) 25 (× + 1 ) -16 = 59; 4) 77 + 8 (х - 5 ) = 125.
помогите пожалуйста!
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x=133/19
x=7
2)25x+25-16=59
25x=50
x=2
3)13x+78-72=123
13x=117
x=39
4)77+8x-40=125
8x=88
x=11