782. 1) 4,8 (5x - 7y) - 4,9x + · 4,5 y - 23 - x = -32,35y;
2) 2,5a - 11.4,46 - 5,6(5a + b) + 262 -11,16.
8
15памагите

Question

Математика: 782. 1) 4,8 (5x - 7y) - 4,9x + · 4,5 y - 23 - x = -32,35y;2) 2,5a - 11.4,46 - 5,6(5a + b) + 262 -11,16.815памагите

Mlpoiuytrewqazxcvbn · Answer

#112/5=20/x12x=5*2012x=100:12x=8 1/3#22/5/x=1/5/2/32/5*2/3=1/5x-1/5x=-4/15:(-1/5)x=1 1/3#33.75/1/8=2 1/3/x3,75x=1/8*7/33 3/4x=7/24:3 3/4x=7/24*4/15=7/90#41,2/x=3/71,2*7=3x-3x=-8,4:(-3)x=2,8#61/0,5=90/xx=90*0,5x=45#7x/5=2,4/2020x=2,4*520x=12:20x=0,6#8x/7/18=2/7/7/97/9x=7/8*2/77/9x=1/4:7/9x=9/28#927/x=3/427*4=3x-3x=-108:(-3)x=36#1045/5x=9/445*4=5x*9-45x=-180:(-45)x=4#1117/51=x/617*6=51x-51x=-102:(-51)x=2#123 3/4/1 1/8=2 1/3/p3 3/4p=1 1/8*2 1/315/4p=9/8*7/315/4p=21/8:15/4p=21/8*4/15=0,7#133/8=6/168+6=142/7/3=4/6/1414+2/7=14...