Question

7.8x-3.6x=42

Answer 1

7.8x-3.6x=42
(7.8-3.6)x = 42
4.2x = 42
x = 42 ÷ 4.2
x =10

Answer 2

x＝10具体步骤如下

Answer 3

解:7.8X-3.6X=42(合并同类项)
4.2X=42(一个因数等于积除以另一个因数)
X=42÷4.2
Ⅹ=10。