当x=___时,式子5(x-1)+3等于-12

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当x=___时,式子5(x-1)+3等于-12当x=___时,式子5(x-1)+3等于-12当x=___时,式子5(x-1)+3等于-12当x=__-14_时,式子5(x-1)+3等于-12列等式:5

当x=___时,式子5(x-1)+3等于-12
当x=___时,式子5(x-1)+3等于-12

当x=___时,式子5(x-1)+3等于-12
当x=__-14_时,式子5(x-1)+3等于-12

列等式:5(x-1)+3=-12
解得:x=-2

5(x-1)+3等于-12
5(x-1)=-15
x-1=-3
x=-2

5(x-1)+3=-12
5x-5+3=-12
5x-2=-12
5x=-10
x=-2

5(x-1)+3=-12
5x-5+3=-12
5x=-12+5-3
5x=-10
x=-2