a , X + 365 = 678
X = 678 - 365
X = 313
b , X + 245 = 457
X = 457 - 245
X = 212
X + 265 = 678
X = 678 - 256
X = 422
X + 245 = 457
X = 457 - 245
X = 212
a) x+365=678
x=678-365
x=313
b) x+245=457
x=457-245
x=212
A) X + 365 = 678
X = 678 - 365
X = 313
B) X + 245 = 457
X = 457 - 245
X = 212
A)X+365=678
X =678-635
X =43
B)X+245=457
X =457-245
X =212
Haruko
Tìm x:
a) x + 365 = 678
x = 678 - 365
x = 313
b) x + 245 = 457
x = 457 - 245
x = 212
^^// Học tốt! // ~
A) X=678-365=313
B) X=457-245=212
nha
x+365=678
x=678-365
x=313
x+245=457
x=457-245
x=212
a ) x + 365 = 678
x = 678 - 365
x = 313
b ) x + 245 = 457
x = 457 - 245
x = 212
A) X + 365 = 678
X = 678 - 365
X = 313
B) X + 245 = 457
X = 457 - 245
X = 212
a) x + 365 = 678
=> x = 678 - 365 = 313
b) x + 245 = 457
=> x = 457 - 245 = 212