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Simplifying 4a = 20 + (a + 1) Reorder the terms: 4a = 20 + (1 + a) Remove parenthesis around (1 + a) 4a = 20 + 1 + a Combine like terms: 20 + 1 = 21 4a = 21 + a Solving 4a = 21 + 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. 4a + -1a = 21 + a + -1a Combine like terms: 4a + -1a = 3a 3a = 21 + a + -1a Combine like terms: a + -1a = 0 3a = 21 + 0 3a = 21 Divide each side by '3'. a = 7 Simplifying a = 7
| 2(x-2)=20-2x | | -18-6n-4= | | 3x-3=63-8x | | 64x^2-25= | | 9x+7=3x+61 | | x+5x+7x=39 | | 2b^2+7b=-6 | | 3x+9+4x=8 | | 3x+94x=58 | | 4v+6v-13v=9 | | 58=7x+6x+6 | | x=24x^2+36x+11 | | -2+5x+x=-2 | | 7=2x-3x+7 | | -79=x+7x+9 | | 2r^2-(2/3)r=0 | | -10+7x-6x=-12 | | -[5-(a+1)]=9-[5-(2a-3)] | | -10+7x-6x=12 | | -x+1/4+5x=-63/4 | | 4s^2-9t^2= | | 7x^2-3x= | | -x+1/4+5x=63/4 | | 2e^1-5=1 | | -6x+2+5x=7 | | 12x-20=y | | (-b+1)(5b-6)= | | 1+1/3x=-4/3 | | -7x-9=-37 | | .08x+.25(x-6)=.03(x+10) | | 7s-16=-25+8s | | 6=2x^2+x |