7(X-6.9)=35.7 (用方程)

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7(X-6.9)=35.7(用方程)7(X-6.9)=35.7(用方程) 7(X-6.9)=35.7(用方程)7x-48.3=35.77x=35.7+48.3x-6.9.=35.7÷7x=5

7(X-6.9)=35.7 (用方程)
7(X-6.9)=35.7 (用方程)
 

7(X-6.9)=35.7 (用方程)
7x-48.3=35.7
7x=35.7+48.3

x-6.9.=35.7÷7
x=5.1+6.9
x=12

X=7-6.9+3.57
X=0.1+3.57
X=3.67

X=35.7÷7+6.9

7x=35.7+48.3
7x=84
x=12

x=12