19 . ( x - 7 ) = 19
x - 7 = 19 : 19
x - 7 = 1
x = 1+ 7
x = 8
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Các câu hỏi tương tự
tim x
a) ( x- 35 ) . 16 = 0
b) 19. ( x- 7 ) = 19
c) 37. x + 63 . x = 200
dau cham la thay cho dau nhan nha cac ban mong cac ban giai nhanh va chac dung thank cac ban rat nhiu
1. Tim so nguyen to sao cho:
p+2;p+6;p+8;p+12;p+14 cung la so nguyen to.
2. Tim x biet:
60 = \(2^x\) * 3 * 5 va 60 co 12 uoc.
xin loi cac ban nha, may minh khong danh dau duoc, mong cac ban thong cam va lam dum minh nha!Cam on cac ban!
an binh chi dung moi nguoi co 1 so nhan vo khac nhau biet neu an cho cac ban = so nhan vo cac ban dng co roi lan luot binh,chi,dung cung lam nhu vay cuoi cung cac van co sogai bai toan nhan vo = nhau va = 16 nhan vo tim so nhan voi cua moi ban luc dau
Rut gon phan so:7.9+14.27+21.36 phan 21.27+42.81+63.108.dau cham la nhan nha .mong cac ban giup minh.minh ko xuong dong duoc nen viet nhu the nay .mong cac ban thong cam
cac ban oi giai cho mik bai nay zoi
2x+4x+6x+...+100x=50x100
cam on cac ban nhiu lam
a quen de bai la tim x nhe
Viet tap hop E cac so tu nhien lon hon 3 nho hon 13 bang 2 cach. Sau do dien cac ki hieu thich hop vao cho cham:
3......E
; 10.....E 4,7.....E mong cac ban giai nhanh ma dung giup minh nha thak cac ba nhiu
cac ban lam bai nay de kiem tra kien thuc cua ban nha, minh da co ket qua va se theo doi ban nao tra loi dung va chi tiet nhat:
Moi tap hop sau co bao nhieu phan tu va neu ten ki hieu dau cham(.) trong cau c va d !
a) Tap hop A cac so tu nhien x ma x - 8= 12
b) Tap hop B cac so tu nhien x ma x + 7 = 7
c) Tap hop C cac so tu nhien x ma x . 0 = 0
d) Tap hop D cac so tu nhien x ma x .0 = 3
2.125.18+36.252+4.233.9
dau cham la dau nhan nha cac ban
viet cac tap hop sau va cho biet moi tap hop co bao nhieu phan tu ?
a) tap hop A cac so tu nhien x ma x - 5 = 13
b) tap hop B cac so tu nhien x ma x + 8 = 8
c) tap hop C cac so tu nhien x ma x . 0 = 0 ( dau . la dau nhan )
d) tap hop D cac so tu nhien x ma x . 0 = 7
CAC BAN GIUP MIK NHE