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Simplifying -7 + -21a = 15 + -25a Solving -7 + -21a = 15 + -25a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '25a' to each side of the equation. -7 + -21a + 25a = 15 + -25a + 25a Combine like terms: -21a + 25a = 4a -7 + 4a = 15 + -25a + 25a Combine like terms: -25a + 25a = 0 -7 + 4a = 15 + 0 -7 + 4a = 15 Add '7' to each side of the equation. -7 + 7 + 4a = 15 + 7 Combine like terms: -7 + 7 = 0 0 + 4a = 15 + 7 4a = 15 + 7 Combine like terms: 15 + 7 = 22 4a = 22 Divide each side by '4'. a = 5.5 Simplifying a = 5.5
| 7=k(70) | | 2x+48=10z | | 114=7/5u | | 15=1/10f | | -y+9=15 | | 12(6-4x)3x= | | 2/3x-4=4 | | c(q)=2+3q^2 | | 0.1=1/10 | | x+5(x-4)=10 | | -6w+2(w+7)=38 | | 4w/9=16 | | (z-7)(z-2)=0 | | (9.63*204)-(11*204)= | | 9=15/f=90 | | (y+1)(y-7)=0 | | 5x+2(x-3)=43 | | 5f-7=-6f-29 | | 15.5+2.5= | | 5ysquared-6y-8= | | 320-12(9.63)= | | 105-u=247 | | k=9/90 | | 5b-10=14-3b | | 5y+4x=6+2xy | | 9=k*90 | | 8x+24=144 | | 2x+16=-3x+-9 | | F(4)=4-3 | | 2x+4(x+1)=28 | | (4x-1/16)=(2x-3/8) | | 9/90=x/15 |