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Simplifying -54 = 2(7 + -6a) + -8(a + 1) -54 = (7 * 2 + -6a * 2) + -8(a + 1) -54 = (14 + -12a) + -8(a + 1) Reorder the terms: -54 = 14 + -12a + -8(1 + a) -54 = 14 + -12a + (1 * -8 + a * -8) -54 = 14 + -12a + (-8 + -8a) Reorder the terms: -54 = 14 + -8 + -12a + -8a Combine like terms: 14 + -8 = 6 -54 = 6 + -12a + -8a Combine like terms: -12a + -8a = -20a -54 = 6 + -20a Solving -54 = 6 + -20a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '20a' to each side of the equation. -54 + 20a = 6 + -20a + 20a Combine like terms: -20a + 20a = 0 -54 + 20a = 6 + 0 -54 + 20a = 6 Add '54' to each side of the equation. -54 + 54 + 20a = 6 + 54 Combine like terms: -54 + 54 = 0 0 + 20a = 6 + 54 20a = 6 + 54 Combine like terms: 6 + 54 = 60 20a = 60 Divide each side by '20'. a = 3 Simplifying a = 3
| b^2-4*-5*-8= | | 90=(10x+10y) | | 3(y-3/2)-y=7(5-y) | | (-118)-(-628)=510 | | b^2-4-5-8= | | 64x^2+8x=0 | | 5n+5-3n=12 | | 5x+x*.100= | | (4x+4y)=(x+10y) | | 15n^2-41n+14=0 | | (3x+5)(x-2)=-8 | | 25=sqrt(6.5t^2) | | 4.20=0.75*4.20+u | | 5/13=v/6 | | (y-39)(2y+7)(y+12)=0 | | 18x=x+16 | | 4*4-2(-6)(-3)= | | 37=-6(1-6n)-(6n-1) | | sqrt(3.5t^2+3t^2)=25 | | 62+90+x=180 | | 1/2n+41=51 | | b-3=-14 | | 5x^2+x+20=0 | | 7(-6x-4)=266 | | 64+90+x=180 | | 3x+2x-4=x+8 | | 3p+2p=3.50 | | x+54+y=180 | | 4x-10-x= | | 4.20=0.75(4.20)+u | | 37=-6(1+6n)-(6n-1) | | 4x/3-9=6 |