Question

Раскрыть скобки и упростить 1)8(x+5)-7x-39=; 2)7(2x-8)-12x+58 3)6(-3x-3)+21x+21= 4)5(-4x+1)+24x-1=;

Answer 1

1) 8(х+5)-7х-39=8х+40-7х-39=х+1

2) 7(2х-8)-12х+58=14х-56-12х+58

=2х+2=2(х+1)

3) 6(-3х-3)+21х+21=-18х-18+21х+21

=3х+3=3(х+1)

4) 5(-4х+1)+24х-1=-20х+5+24х-1=4х+4 =4(х+1)