Tìm x a) -5/6 . 78/25 + x = 4/15 . -3/8 b) 3/4 . 7/9 + 1/4 . 7/9 -x =1
Giải thích
a)
−56.7825+x=415.−38−135+x=−110x=−110−−135x=52
b)
34.79+14.79−x=17934+14−x=179−x=1x=−29
a)
−56.7825+x=415.−38−135+x=−110x=−110−−135x=52
b)
34.79+14.79−x=17934+14−x=179−x=1x=−29