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2x + 3y = 12 x = 1.45, so 2 * 1.45 + 3y = 12 2.9 + 3y = 12 3y = 12 - 2.9 = 9.1 y = 9.1/3 = 3.0333... or 91/30 or 3 1/30.
If you solve such an equation for "y", you get an equation in the slope-intercept form.
2x-3y=13
you just put 0 in for Y and solve for x. So 2x-3(0)=12, so x=6.
2x + 3y = 9x = 3, y = 1 therefore 6 + 3 = 9