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Simplifying 7a + -10(a + -3) + 12 = 0 Reorder the terms: 7a + -10(-3 + a) + 12 = 0 7a + (-3 * -10 + a * -10) + 12 = 0 7a + (30 + -10a) + 12 = 0 Reorder the terms: 30 + 12 + 7a + -10a = 0 Combine like terms: 30 + 12 = 42 42 + 7a + -10a = 0 Combine like terms: 7a + -10a = -3a 42 + -3a = 0 Solving 42 + -3a = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-42' to each side of the equation. 42 + -42 + -3a = 0 + -42 Combine like terms: 42 + -42 = 0 0 + -3a = 0 + -42 -3a = 0 + -42 Combine like terms: 0 + -42 = -42 -3a = -42 Divide each side by '-3'. a = 14 Simplifying a = 14
| 4(x-4)=56/14 | | 1/2+3/8s=1/8s+1/4 | | 7m+mn+35+5n= | | 9=3X+2Y | | 5(2n+12)=10(n+5)-40n | | -282-(+1017)= | | 9+10z-6=9z+75-7z | | 7-15p-3p+8=-10+2p+11 | | 3(2w+7)=9 | | 9p+49=-3-4p | | 12(x-2)-8x+3= | | .66x-.16=.50x+.83 | | 8/7y+2/y=1 | | 2(a-3)-4a= | | 6+3v-10v+10+6v=-4 | | 4x-(9-3x)=8(x-1/8) | | .8w-.4=-4+w | | 11=-8v+6+6v+2 | | 5a-2a+3= | | .6w-.8=-6+w | | 5s+7s=8 | | 8x+9x=119 | | x+x+30+3x=180 | | 4y-5x+8y-3y= | | 0.80(x-100.00)=x-50.00 | | 4/13x=28 | | x/16=-30 | | 9+3X+2Y=0 | | 5+3s-6s= | | x/16=30 | | 4h+12=-1 | | -r=120 |