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Simplifying 3a + 7 = (3 + a) Reorder the terms: 7 + 3a = (3 + a) Remove parenthesis around (3 + a) 7 + 3a = 3 + a Solving 7 + 3a = 3 + a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-1a' to each side of the equation. 7 + 3a + -1a = 3 + a + -1a Combine like terms: 3a + -1a = 2a 7 + 2a = 3 + a + -1a Combine like terms: a + -1a = 0 7 + 2a = 3 + 0 7 + 2a = 3 Add '-7' to each side of the equation. 7 + -7 + 2a = 3 + -7 Combine like terms: 7 + -7 = 0 0 + 2a = 3 + -7 2a = 3 + -7 Combine like terms: 3 + -7 = -4 2a = -4 Divide each side by '2'. a = -2 Simplifying a = -2
| 5x-1=34-15 | | 5(9h)+2(18h)=378 | | log[5](x-3)+log[5](x+21)=2 | | x(.086)=315-x | | 180(n-2)/n=150 | | (8y+4)+(4y+3)= | | 5(9h)+2(2*9h)=378 | | -32t^2+50=0 | | 15=(a+5) | | -32t^2+50t=0 | | (5x+20)+(2x-9)+82=180 | | (m+4)(m-5)=-8 | | 4=7/v-3 | | 55-35x= | | 5x-25=250 | | 11h+18=378 | | 56+x=5x | | 3x+9=108 | | 4.5a+8c=180 | | 27=6y | | 4.5a+8c=x | | 7-2x-4x+5= | | 180(n-2)/n=108 | | .5(x+9)= | | -6-3=15-2*(x-5) | | 9=-2y+5 | | 9=-3/w | | .5(x+9)=5 | | 100+7x=2x | | -6x-3=15-2*(x-5) | | 23x+8-26x=1-5 | | (2(.25)+1)+((.25)-1)+(.25)=.85 |