问题
解答题
解方程.
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答案
(1)4x+8=36,
4x+8-8=36-8,
4x=28,
4x÷4=28÷4,
x=7;
(2)x÷5.6=3,
x=3×5.6,
x=16.8;
(3)3.6x-x=9.75,
2.6x=9.75,
2.6x÷2.6=9.75÷2.6,
x=3.75;
(4)4(x-3)=23.2,
4×(x-3)÷4=23.2÷4,
x-3=5.8,
x-3+3=5.8+3,
x=8.8;