(1)(X+10)12=(x+2)7
7(X+10)=12(x+2)
7x+70=12x+24
7x-12x=24-70
-5x=-46
x=46/5=9.2
(2)0.9x-250=250*15.2%
0.9x=250*15.2%+250
0.9x=250X1.152
0.9x=288
x=320
(3)5/8x+4=7/11x+1
5/8x-7/11x=1-4
(55-56)/88x=-3
-1/88x=-3
x=264
(1)(X+10)12=(x+2)7
7(X+10)=12(x+2)
7x+70=12x+24
7x-12x=24-70
-5x=-46
x=46/5=9.2
(2)0.9x-250=250*15.2%
0.9x=250*15.2%+250
0.9x=250X1.152
0.9x=288
x=320
(3)5/8x+4=7/11x+1
5/8x-7/11x=1-4
(55-56)/88x=-3
-1/88x=-3
x=264