五道一元一次方程!忘记了额== ① 2x-7=3-2x ②x-1 -1=2x-1 ③x-x-1=2-x-3 ④ -1 =
五道一元一次方程!
忘记了额==
① 2x-7=3-2x ②x-1 -1=2x-1 ③x-x-1=2-x-3 ④ -1 = x+2=12 ⑤2(x+1)+1-2-3(x+1)
---- ---- --- ---- --- --- ---- --- --------- -------- =X
3 5 4 6 2 5 0.3 0.5 3 4
① 2x-7/3=3-2x/5 ③x- (x-1/2) =2-(x-3/5) ④ -1/0.3= x+2/0.5=12
②x-1/4 -1=2x-1/6 ⑤2(x+1)+1/3 - 2-3(X+1)/4=x