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duyminhle1004
1 năm trước
$^{1}$ Tìm số nguyên x sao cho: a) x + 25 = - 63 - (- 17) b) x –(- 20)= 75 – 95 c) 2x – 15 = -11 – (- 16) d) 7 - 2x = - 37 – (- 26) $^{2}$ Tìm số nguyên x sao cho: a) 24 - ( x- 6) = 125 + (57-125) b) -34+ (21- x) = - 3746 – ( 30 – 3746) c) x+3 - (8-x) =x+4 d) 2x – 15 = x+8
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