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Simplifying 7 + 4(2a + 15) = -12 Reorder the terms: 7 + 4(15 + 2a) = -12 7 + (15 * 4 + 2a * 4) = -12 7 + (60 + 8a) = -12 Combine like terms: 7 + 60 = 67 67 + 8a = -12 Solving 67 + 8a = -12 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-67' to each side of the equation. 67 + -67 + 8a = -12 + -67 Combine like terms: 67 + -67 = 0 0 + 8a = -12 + -67 8a = -12 + -67 Combine like terms: -12 + -67 = -79 8a = -79 Divide each side by '8'. a = -9.875 Simplifying a = -9.875
| 0.15+0.05= | | (r-3/10)/(r/16) | | 5x-125=-2+85 | | -10x-2y=-5 | | 0.20x+0.35(50)=24.5 | | 3a=x | | B^2H^5x/E^4R=T^3k/y | | 1.50(534-y)+2y=879.50 | | Yk+yq=r | | 3(x-2)+4x-5=7(x-1)-6 | | 4a-7=5(a-2)+1 | | 7p+6=6p+8 | | 12+y=6(2y+1) | | (x+4)(x+4)(x+4)(x+4)-4096=0 | | -3x+5=-4x+7 | | (w-9)(w+9)= | | (5/d)=(2/6) | | -13+2r=5(-2+7r)-3 | | X-19=-17 | | sqrt(17x-4)=x+4 | | -1/31-8x=2 | | 12-3(2w+1)=8w-3(8+w) | | y-2= | | 8x+33=49 | | -1+3x=29 | | 10h+40=200 | | -98-9x=92+x | | 4x+8=58 | | 6a+12=7a+11 | | 8-4.9x^2=0 | | 12-3(w+1)=8w-3(8+w) | | (a/5)=(45/15) |