Question

6/8х+3/4*1/4*1/2х при х=,7
7/12*6в-(8-1.5в) при в=4

Answer 1

6/8*7+3/4*1/4*1/2*7=42/8+21/32=168/32+21/32=189/32=5 29/32

7/12*6*4-(8-1,5*4)=14-(8-6)=14-2=12