Question

уравнения: (x+7)*5-8=4*8 ; (4*x+1)*2+5=3*3 ;  2*x-3*6+7=3*7 ;  5+(3*x+1)=2*9

Answer 1

1. (х+7)*5=32; х+7=32/5; х+7=6,4; х=6,4-7=-0,6; 2.8х+2+5= 9; 8х=2; х=0,25; 3.2х-18+7=21; 2х=32; х=16; 4.5+3х+1=18; 3х+6=18; 3х=18-6; 3х=12; х=4;