It equals 90
If you mean: 15a = 6a - 90 then the variable a works out as -10. If you mean 15a + 6a - 90, then it equals 21a - 90.
90 + 90 + 60 = 240
20 x 90 = 180020 times 90 equals 18 times 100 equals 1800.
2.5*36 = 90
It equals 90
3 times 90 equals 270.
It is 90+90 = 180
270
90+b=2x70 90+b=140 90-90+b=140-90 b=50
If you mean: 15a = 6a - 90 then the variable a works out as -10. If you mean 15a + 6a - 90, then it equals 21a - 90.
90 x 90 = 8,100
90
90 + 90 + 60 = 240
20 x 90 = 180020 times 90 equals 18 times 100 equals 1800.
81
90