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Simplifying 9 = 4(5 + -1a) 9 = (5 * 4 + -1a * 4) 9 = (20 + -4a) Solving 9 = 20 + -4a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '4a' to each side of the equation. 9 + 4a = 20 + -4a + 4a Combine like terms: -4a + 4a = 0 9 + 4a = 20 + 0 9 + 4a = 20 Add '-9' to each side of the equation. 9 + -9 + 4a = 20 + -9 Combine like terms: 9 + -9 = 0 0 + 4a = 20 + -9 4a = 20 + -9 Combine like terms: 20 + -9 = 11 4a = 11 Divide each side by '4'. a = 2.75 Simplifying a = 2.75
| 10x+6=6x-3 | | -1(x+8)+9=7x+1-8x | | 2z=19.9 | | -11-5=6(5+4) | | -12=-2p+8 | | 12(3x-7)=-300 | | 2q=3 | | 3q+7=7q | | 0=6x+8 | | (X+0.2)(X+1.5)=0 | | 7q^2-9q-(n+2)=0 | | -4n+9=-7 | | -14+28=-2(x+6) | | 3x=360/4 | | 5(x+12)+7=11 | | 329-9x=14 | | g(20)=210-20(20) | | f(20)=210-20(20) | | (3x+2)(7x-4)=21x^2+10 | | (X-6)+y=12 | | f(20)=330-30(20) | | 15m+0.50=0.25+25m | | 92+(38)= | | 10-n=1-10n | | 2x+10=8x-64 | | 4(z+5)=60 | | 7=3t-3-2t+6 | | 92+38= | | y+8x=21 | | 10=9x-4 | | 92-(-38)= | | 4=4b+10 |