Answer:
4x+8y=40
4x+(8+0.8)=40
4x+6.4=40
4x+6.4-6.4 =40-6.4
4x=33.6
4x÷4=33.6÷4
X=8.4
Explanation:
8.4 is the ans
4x + 6.4=40
4x=40-6.4
x=33.6÷4
x=8.4
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