(x-6)乘7=2x怎么做

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(x-6)乘7=2x怎么做(x-6)乘7=2x怎么做(x-6)乘7=2x怎么做(x-6)乘7=2x7x-42=2x7x-2x=425x=42x=42÷5x=8.4(x-6)乘7=2x7x-42=2x7

(x-6)乘7=2x怎么做
(x-6)乘7=2x怎么做

(x-6)乘7=2x怎么做
(x-6)乘7=2x
7x-42=2x
7x-2x=42
5x=42
x=42÷5
x=8.4

(x-6)乘7=2x
7x-42=2x
7x-2x=42
5x=42
x=8.4

(x-6)乘7=2x
7x-42=2x
5x=42
x= 8.4

7x-6*7=2x
7x-2x=6*7
5x=42
x=42÷5
x=8.4

。。。。。
原式:7x-42=2x
5x-42=0
5x=42
x=42/5