Bài 23: Tìm x:
a) 29 < 30 < 32
b) 36 < 37 + 1 < 39
c) 30 + 30 < 64
d) 46 < 88 - 42 < 48
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=?
42+64+71+10+30=
25+14+36+48+46=
24 < x < 27
x + 20 < 51
36 < x - 45 < 48
46 < x - 45 < 48
ai nhanh mình tick cho
tìm x,biết:46<x-45<48
1.Số?
6x...=6 6x...=12 6x... =18
6x...=24 6x...=30 ...x...=36
6x...=42 6x...=48 6x9 =54
2.Tìm \(x\), biết \(x\times x=49\)?
3.Tìm tích, biết thừa số là 8?
4.Tính:
9x1= 9x4= 9x7=
9x2= 9x5= 9x8=
9x3= 9x6= 9x9=
9x10=
Tìm x:
a) x + 16 = 32
b) x + 27 = 52
c) 36 + x = 42
Tìm x:
a) x + 8 = 36
b) 9 + x = 48
c) x + 7 = 55
Tìm x :
x : 235 = 42
56 - x = 23
dien dau <>= voi x khac 0, 29+42-x .... 42+29+x
x-26...x-18
