2.6x+1.2=42.8+x
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2.6x+1.2=42.8+x2.6x+1.2=42.8+x2.6x+1.2=42.8+x原始2.6x-x=42.8-1.21.6x=41.6x=26
2.6x+1.2=42.8+x
2.6x+1.2=42.8+x
2.6x+1.2=42.8+x
原始2.6x-x=42.8-1.2
1.6x=41.6
x=26
2.6x+1.2=42.8+x
42.8+X=2.6+1.2
2.6x-x-0.1x=0.75
(X+X)+(X-X)+(X*X)+(X/X)=100
360-x=2.6x
1.2x=x+20
1.2X-30=X
1.2x-x=0.
x-1.2x=9.6
x-40%x=1.2
x*x*x*x*x=80000?
x+x=() x*x=() x-0.8x=() 1.2*2y=()
3x-1.2x=363x-1.2x=363x-1.2x=363x-1.2x=363x-1.2x=36
4x+1.2×5=24.4 x-0.7x=2.1 8x+5x=2.6 (4x+5)÷2=4x+1.2×5=24.4 x-0.7x=2.18x+5x=2.6 (4x+5)÷2=17.52x-16=24
x*x*x=504 x*x*x=504
(x+x)+(x-x)+(x/x)=11.2
f(x)=x,x
x+x=x+15