五年級下冊解方程專項練習題題（三）0.5+2X=9.8÷2(13)15x=32(2X+0.5)=9.8(14)3x—8=162500+x=6x(15)3x+9=27350=50+5X+X(16)18(x-2)=270X-0.8X=612x=300-4x(6)12x-8x=4.87x+5.3=7.4(7)7.5+2X=153x÷5=4.8(8)1.2x=81.60.5x+8=43(9)x+5.6=9.46x-3x=18(10)x-0.7x=3.67(6.5+x)=87.5(11)91÷x=1.30.273÷x=0.35(37)x÷0.75=90(38)0.1(x+6)=3.3×0.4(39)(27.5-3.5)÷x=4(40)9x-40=5(41)x÷5+9=21(42)48-27+5x=31(43)10.5+21+X=56(44)x+2x+18=78(45)(200-x)÷5=30(46)(x-140)÷70=420-9x=2 (47)5.6x=33.69.8-x=3.875.6÷x=12.65x+12.5=32.55(x+8)=100x+3x+10=703(X+3)=50+3-X5x+15=603.5-5x=20.3×7+4x=12.5x÷1.5-1.25=0.756x+12.8=15.8(62)2χ-97=34.2150×2+3X=690(63)3.4χ-48=26.82χ-20=4(64)42x+25x=1343x+6=18(65)1.5(x+1.6)=3.62(2.8+x)=10.4(66)2(x-3)=5.8(x-3)÷2=7.5(67)65x+7=13713.2x+9x=33.3(68)9x+4×2.5=913x=x+100(69)4.2x+2.5x=134x+4.8=7.2 (70)10.5x+6.5x=516x+18=48(71)89x-43x=9.23(x+2.1)=10.5(72)5x-45=10012x-9x=8.7(75)4χ-χ=48.6(87)95-5x=80(76)4.5χ-χ=35(88)1.8+6x=54(77)X-5.7=2.15(89)6.7x-60.3=6.7(78)5X-2X=18(90)9+4x=53(79)3X+0.7=7(91)2x+8=16(80)3.5×2=4.2+x(92)20x-14x=24(81)26×1.5=2x+10(93)x+7x=8(82)0.5×16-16×0.2=4x(94) 9x-3x=6139.25-X=0.403(95)6x-8=418.9÷X=0.3(96)5x+x=9(99) 2χ-6=12(100) 7x+7=14(101) 6χ-6=0(102) 5x+6=11(103) 2χ-8=10(104) 2.5χ-8=4(105)4χ-1=7(106)3χ+7=28(107)3χ-7=263χ-8=316χ+6=123χ-3=35χ-3χ=42χ+16=195χ+8=1914-6χ=815+6χ=275-8χ=47χ+8=15(108)9χ-χ=16(121)9-2χ=1(109)24χ+χ=50(122)4+5x=9(135)10-χ=8(136)8x+9=17(137)9+6x=15(138)x+9x=4+76x-3=69x=184x-18=145x+9=11(139)2x+9=17(140)8-4x=66x-8=28 (141)7x-8=20 (142)x-56=1 (143)8-7x=1 (144)(133)x-30=12 (145)17-2x=11x+4+8=237x-12=9X-5.7=2.35X-2X=183X+0.5=53.5×2=4X9.26-X=0.26(160)3x-42÷14=1536.9÷X=0.3(161)12+4x=56X÷0.5=2.6(162)22-10x=1293-5x=80X+8.3=10.7(152)180-6x=545x=30(153)8+4x=40x-5.6=9.4(154)0.2x-0.5=3.7x÷0.8=909.4x-0.4x=16.2(167)3x-8=1692-4x=20(168)3x+9=277x÷6=1.4(169)5.3+7x=7.416x+34x=1(170)3x÷5=4.8(176)x÷5+9=21X-0.8X=