Решите : 3/4 (1/2x+2/3)=3x+21/4

Question

Решите : 3/4 (1/2x+2/3)=3x+21/4

Answer 1

3/4(1/2х+2/3)=3х+2 1/4
3/4*1/2х+3/4*2/3=3х+2 1/4
3/8х+1/2=3х+2 1/4
3/8х-3х=2 1/4-1/2
3/8х-2 8/8х=1 5/4-2/4
-2 5/8х=1 3/4
х=1 3/4:(-2 5/8)
х=-7/4:21/8
х=-7/4*8/21
х=-1*2/3
х=-2/3