.17 22-1.6×7 0.89×4.8+0.89×5.2Р10―0.34―0.66 12.8+2.04×9.5 6.15×9.4-42 4.5×3.6+5.2×0.35 4.5×0.9+5.5×0.9 35.7÷14÷30Р5.4÷(2.7×4) 9.4×[0.96÷(5.4÷0.9)] 52÷6.5+26×0.37 1.6×(2.25+10.5÷1.5) 90÷(3.6-1.8) 3.4×7.8÷3.9Р0.36÷[(6.1―4.6) ×0.8] 54÷(3.94+6.86) 0.175÷0.25×4 (3.2+0.12) ÷0.8 0.175÷0.25×0.4 28.7÷7+4.5Р96÷(15.4-12.2) 2.4×3÷0.18 9÷[0.3×(8-6.5)] 7.8+4.56+2.2 12.7+12.5÷5 0.4×99+0.4 3.6×4-2.5Р0.65×6.4-0.65×5.4 5.01-1.9+4.99 78÷0.25÷0.4Р五、解方程Рx-19=2 x-12.3=3.8 4x=380 3y=45 1.6x=3.36 47+x=47 Р4x=42 6m=42 y-21=14 6y=54 x÷7=12 a-18=26 1.2x=48Р24n=96 2x+20=80 3x+6=15 0.5x-2=24 x+3x=180 2x-x=4 Р4m-2m=48 5y+y=96 y+y=33 x+3x=72 5x-2x=123 y+3y=36Р6x-3x=4.8 3m+2m=65 3x+4=34 x+5=55 2x+5=45 2x-6=40Р3x+20=50 4x+9=249 3y-6=48 y+2y=45 x-360=312 6x-x=125Рm÷0.6=4.5 3x=3.6 x-18=40 2y+7=91 x+2.5=10 5x-3.9=5.1Р8m÷2=15
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