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Simplifying 4x + 9 + -7x = 12 Reorder the terms: 9 + 4x + -7x = 12 Combine like terms: 4x + -7x = -3x 9 + -3x = 12 Solving 9 + -3x = 12 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -3x = 12 + -9 Combine like terms: 9 + -9 = 0 0 + -3x = 12 + -9 -3x = 12 + -9 Combine like terms: 12 + -9 = 3 -3x = 3 Divide each side by '-3'. x = -1 Simplifying x = -1
| 12=n*3 | | 50-3n=30 | | -1=3y+5 | | 21y+4=27 | | 6y-19=3x+32 | | 180=9x+29 | | 2+7x=5+8x+2-2x | | 326.6856=4*3.14*r^2 | | 5=2(x+1) | | 4x/3-3=1 | | 0.6(5-9h)=7 | | 4y-42=2y | | 326.6836=4*3.14*r^2 | | 180=12x-9 | | 5x-3y=33 | | 3x/7-1=23 | | C=pic | | 5x-3y= 33 | | 11+x=9+15 | | 6y-4x=54 | | 498.5064=4*3.14*r^2 | | .15q=6 | | 35y^2-11y+6= | | 41+x=73 | | 0.4(i+2)=1 | | 7(z+2)-2(z-2)=2(z-4)+2(z-3) | | 2c^4-6c^4=12c^2-36c | | =12x-9 | | Cos23=x/18 | | 5-y/9 | | b^2-3by-40y^2= | | sin^2x+4sinx*cosx+5=0 |