Question

Tìm số nguyên x , biết: a)159−(25−x)=43

b) (79−x)−43=−(17−52)

Answer 1

159 − (25 − x) = 43

159 − 25 + x = 43

x = 43 − 159 + 25

x = −91.

 

(79 − x) − 43 = −(17 − 52)

79 − x − 43 = −17 + 52

−x = −17 + 52 − 79 + 43

−x = −1

x = 1.

Answer 2

a,-91

b,1

tick nha

Answer 3

x = −91.