x + 12 = 21 + 54
x + 12 = 75
x = 75 - 12
x = 63
x + 12 = 21+54
x + 12 = 75
x = 75 - 12
x = 63
x + 12 = 75
x = 75 - 12
x = 63
x + 12 = 75
x = 75 - 12
x = 63
x + 12= 21+54
x+12 = 75
x= 75-12
x=63
x+12=21+54
x+12=75
x =75-12
x = 63
là 63 nha
x + 12 = 75
x = 75 - 12
x = 63
x+12=21+54
x+12=75
x =75-12
x =63
x+12=75
x=75-12
x=63
1.x bằng bao nhiêu?
a)x-21=18; b)x-12=54; c)x-19=61;
d)x-82=14; e)x-82=8; g)x-98=1.
2.x bằng bao nhiêu?
a)99-x=54; b)9-x=2; c)18-x=8;
d)8-x=1; e)8-x=5; g)100-x=100.
3.x bằng bao nhiêu?
a)100-23=x=18; b)x-12=29-18.
Tìm x:
a) x + 26 = 54
b) 35 + x = 94
c) x – 34 = 12
x + 23 = 54 x × 2 = 12 x - 12 = 23
tìm x
a, 54+x-65+3=12
b,x-45+65=59
Tìm x:
X + 6 = 12
14 + x = 21
9 + x = 61
Tính nhanh : (21+12-3+44+55)x(2x6-4x3)
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51+52+53+54+56+57+58+59+60+61+62+63+64+65+66+67+68+69+70=?
12 + 21 + 12 + 12 + 21 + 19 + 18 + 16
tim x:
a) : x+ 12 = 12+6 b): x - 21 = 33 -21
c) : 14 - x = 14 -2 d): x - 48 = 65 - 28
e): 65 - x = 48 + 17
10 + 21 + 32 + 43 + 54 + 65 + 76 + 87 + 98 = ???
Lưu ý: Ko sai đề, chỉ là mình thêm vào một tí thôi.
