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Simplifying -3(7 + -3a) = 7a + -11 (7 * -3 + -3a * -3) = 7a + -11 (-21 + 9a) = 7a + -11 Reorder the terms: -21 + 9a = -11 + 7a Solving -21 + 9a = -11 + 7a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-7a' to each side of the equation. -21 + 9a + -7a = -11 + 7a + -7a Combine like terms: 9a + -7a = 2a -21 + 2a = -11 + 7a + -7a Combine like terms: 7a + -7a = 0 -21 + 2a = -11 + 0 -21 + 2a = -11 Add '21' to each side of the equation. -21 + 21 + 2a = -11 + 21 Combine like terms: -21 + 21 = 0 0 + 2a = -11 + 21 2a = -11 + 21 Combine like terms: -11 + 21 = 10 2a = 10 Divide each side by '2'. a = 5 Simplifying a = 5
| 3a/5ab | | 8(3+x)=-32 | | 3(x-8)+2x=-22 | | 1000-4/7x=35000 | | -7(x-1)-83=2x-9(x+8) | | 2(3s+4)=3(-2s+5) | | 7x-3x+4=x-3+7 | | 3(x-6)-6(x-3)=x+9-(x+6) | | 13-2y=1 | | 1000x-4/7=35000 | | 152=8n | | X-10+4x=-15 | | 4-2x+5=5(7-8x)-6(1-3x) | | 5n-36=6(3n-6)+n | | 4x^2+3x+2.25=6.25 | | b-9+6b= | | 2(5-bx)=15.1-7x | | 7-2r=4r-11 | | 9.1y-2= | | -42=3/4(f-4) | | 3xwhat=20 | | 5(1)=4m+8(1) | | d+8=224 | | 8+2=9y+15-8y | | 938+376+842= | | 12+5x-7=75 | | -7x-6-3x=-116 | | (-.75)=9 | | cos(x)=10 | | 15+n+(-8)= | | log(x)*x=10 | | .75y=9 |