Tìm x, biết (19x+2.5^2):14=(13-8)^2-4^2
Giải thích
19x+2.52:14=13−82−42
19x+2.52:14=52−42
19x+2.52:14=9
19x+2.52=14.9
19x+50=126
19x=126−50
19x=76
x=4
19x+2.52:14=13−82−42
19x+2.52:14=52−42
19x+2.52:14=9
19x+2.52=14.9
19x+50=126
19x=126−50
19x=76
x=4