2/3(1 1/2х+3/5)- 4/5(5/12х-1/2)=1 3/5 решите ! надо - вопрос №531320823112354551212135 от camcalol 16.06.2020 19:20

Question

Математика: 2/3(1 1/2х+3/5)- 4/5(5/12х-1/2)=1 3/5 решите ! надо

camcalol · Answer

2/3(1 1/2х+3/5)-4/5(5/12х-1/2)=1 3/52/3×3/2х+2/3×3/5-4/5×5/12х+4/5×1/2=1 3/51×х+2×1/5-1×1/3х+2/5×1=1 3/5х+2/5-1/3х+2/5=1 3/5х-1/3х=1 3/5-2/5-2/53/3х-1/3х=8/5-4/52/3х=4/5х=4/5÷2/3х=4/5×3/2х=2/5×3х=6/5х=1 1/5...