题目五年级数学(方程)习题及答案(1) x+37=88 (2) x+3=93 (3) x+12=107(4) x-4=46 (5) x-42=14 (6) x-80=12(7) x+5.9=12.3 (8) x+1.2=11 (9) x+6.6=14.9(10) x-1.1=7.1 (11) x-0.4=5.7 (12) x-0.5=3.4(13) 14+x=90 (14) 42+x=12...