(25:5+7x29):2+[230-(38x2x149)]= . [(357:74344:8):2]x31+17-(500:4+7)= . (28x5+30):10+729:9-[25x(39-19x2)]=. • (57x2:3)+-32x450-[39x(4+2):2]+8= . [(248:8-21x1):10]+(500:50+800:20)= 29x3-38+[2000-(17x2+39x1:3)]= . 68:2+[564:6+(31x2+15x3-117:3)]= [(294:7x34):2]+350x100-34x21= . 234:9+[4000-(31+7)x15]:5-219:3= (31x3+74x5-32x9)-[200:20+(1000-693)]= • 400+480:4+[68:2+4x(20+12+18)]=​