81x-342=76(x-2)怎么解,

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81x-342=76(x-2)怎么解,81x-342=76(x-2)怎么解,81x-342=76(x-2)怎么解,81x-342=76x-76*2移项81x-76x=342-76*25x=190x=1

81x-342=76(x-2)怎么解,
81x-342=76(x-2)怎么解,

81x-342=76(x-2)怎么解,
81x-342=76x-76*2
移项
81x-76x=342-76*2
5x=190
x=190÷5
x=38

81x-342=76(x-2)
81x-342=76x-76*2
81x-76x=342-76*2
5x=190
x=38

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81x-342=76(x-2)
81x-342=76x-152
81x-76x=342-152
5x=190
x=38

81x-342=76(x-2)
=76x-2*76
81x-76x=342-76*2
5x=342-152=190
x=38

81(X-2)-180=76(X-2)
5(X-2)=36
X-2=36
X=38

去括号:81x-342=76x-76*2
移 项:81x-76x=342-152
合并同类项:5x=190
系数化为1 :x=38

81x-342=76x-152
81x-76x=-152+342
5x=190
x=38\7
81x-342=76x-152
81x-76x=-152+342
5x=190
x=38

1)展开括号81x-342=76x-152
2)整理得
81x-76x=342-152
5x=190
3)解得
x=38\7
1)展开括号81x-342=76x-152
2)整理得81x-76x=342-1525x=190
3)解得x=38