41x-25x-1=15 (137) 47x-9x-3.7=38.1 (138) 52x-46x-4.8=3.6(139) 5x+38×2=186 (140) 11x+16×2=109 (141) 2x+3×35=129(142) 2x-9×2=40 (143) 4x-3×10=150 (144) 6x-51×2=42(145) 0.2x+1×19=26.8 (146) 0.3x+3×3=13.5 (147) 0....