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• Equation:
• Equation x^4=81
• Equation (170^(1/2)/2)*(1/x)-8x=340
• Equation 12/(x-15)=15/(x-12)
• Equation ||x|-4|=5
• Express {x} in terms of y where:
• -14*x+19*y=-3
• -12*x-13*y=-2
• -14*x+15*y=19
• -3*x-1*y=-9

• Identical expressions

• ||x|- four |= five
• module of |x| minus 4| equally 5
• module of |x| minus four | equally five

• Similar expressions

• ||x|+4|=5