document.write( "Question 899095: 
How do you solve these matrices equations? \r\n" );
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document.write( "1. -3x +[7  0  -1] = [10     0   8]\r\n" );
document.write( "        [2 -3   4]   [-19  -18  10]\r\n" );
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document.write( "2. -3y + 2[6     9] = [27    -18]\r\n" );
document.write( "          [-12  15]   [30      6]\r\n" );
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document.write( "3.  3[2   0]-2x =[-10     5]\r\n" );
document.write( "     [-1  5]     [0      17]\r\n" );
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document.write( "4. 5x -[1.5    -3.6] = [0.2    1.3]\r\n" );
document.write( "       [-0.3    2.8]   [-5.6   1.7]\r\n" );
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Algebra.Com's Answer #545207 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
How do you solve these matrices equations?
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document.write( "I'll just do one.  It's just like solving ordinary equations, except \r\n" );
document.write( "you do the operations to all the elements or to corresponding elements:\r\n" );
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document.write( "I'll go through every step, but you'll be able to do some of the\r\n" );
document.write( "steps in your head.\r\n" );
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document.write( "  \"-3x%2B%28matrix%282%2C3%2C7%2C0%2C-1%2C2%2C-3%2C4%29%29\"\"%22%22=%22%22\"\"%28matrix%282%2C3%2C10%2C0%2C8%2C-19%2C-18%2C10%29%29\"\r\n" );
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document.write( "Subtract the matrix on the left from both sides:\r\n" );
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document.write( "             \"-3x\"\"%22%22=%22%22\"\r\n" );
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document.write( "Subtract the matrices by subtracting corresponding elements\r\n" );
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document.write( "          \"-3x\"\"%22%22=%22%22\"\"%28matrix%282%2C3%2C10-7%2C0-0%2C8-%28-1%29%2C-19-2%2C-18-%28-3%29%2C10-4%29%29\" \r\n" );
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document.write( "          \"-3x\"\"%22%22=%22%22\"\"%28matrix%282%2C3%2C3%2C0%2C8%2B1%2C-21%2C-18%2B3%2C6%29%29\" \r\n" );
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document.write( "          \"-3x\"\"%22%22=%22%22\"\"%28matrix%282%2C3%2C3%2C0%2C9%2C-21%2C-15%2C6%29%29\"\r\n" );
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document.write( "Divide both sides by -3 by dividing every element by -3\r\n" );
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document.write( "         \"%28-3x%29%2F%28-3%29\"\"%22%22=%22%22\"\r\n" );
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document.write( "             \"x\"\"%22%22=%22%22\"\"%28matrix%282%2C3%2C-1%2C0%2C-3%2C7%2C5%2C-2%29%29\"\r\n" );
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document.write( "Edwin
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